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| Preface | |
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| Acknowledgments | |
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| Introduction | |
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| Disorders Mostly Limited to the Epidermis and Stratum Corneum | |
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| Hyperkeratosis with Hypogranulosis | |
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| No Inflammation | |
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| Ichthyosis Vulgaris | |
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| Hyperkeratosis with Normal or Hypergranulosis | |
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| No Inflammation | |
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| X-linked Ichthyosis | |
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| Epidermolytic Hyperkeratosis | |
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| Scant Inflammation | |
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| Lichen Amyloidosis and Macular Amyloidosis | |
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| Hyperkeratosis with Parakeratosis | |
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| Scant or No Inflammation | |
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| Dermatophytosis | |
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| Localized or Diffuse Hyperpigmentations | |
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| No Inflammation | |
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| Mucosal Melanotic Macules | |
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| Ephelids (Freckles) | |
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| Scant Inflammation | |
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| Pityriasis (Tinea) Versicolor | |
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| Localized or Diffuse Hypopigmentations | |
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| With or Without Slight Inflammation | |
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| Vitiligo | |
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| References | |
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| Localized Superficial Epidermal or Melanocytic Proliferations | |
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| Localized Irregular Thickening of the Epidermis | |
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| Localized Epidermal Proliferations | |
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| Actinic Keratosis | |
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| Eccrine Poroma | |
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| Squamous Cell Carcinoma In Situ (Bowen's Disease) | |
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| Bowenoid Papulosis | |
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| Clear-Cell Squamous Cell Carcinoma In Situ | |
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| Clear-Cell Acanthoma | |
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| Superficial Melanocytic Proliferations | |
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| Superficial Melanocytic Nevi and Melanomas | |
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| Pigmented Spindle Cell Nevus | |
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| Acral Lentiginous Melanoma | |
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| Localized Lesions with Thinning of the Epidermis | |
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| With Melanocytic Proliferation | |
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| Lentigo Maligna Melanoma, In Situ or Microinvasive | |
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| Without Melanocytic Proliferation | |
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| Atrophic Actinic Keratosis | |
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| Porokeratosis | |
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| Localized Lesions with Elongated Rete Ridges | |
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| With Melanocytic Proliferation | |
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| Actinic Lentigo | |
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| Lentigo Simplex | |
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| Lentiginous Junctional Nevus | |
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| Nevus Spilus | |
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| Junctional or Superficial Compound Dysplastic Nevi | |
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| Without Melanocytic Proliferation | |
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| Epidermal Nevus | |
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| Seborrheic Keratosis | |
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| Acanthosis Nigricans | |
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| Localized Lesions with Pagetoid Epithelial Proliferation | |
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| Keratinocytic Proliferations | |
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| Pagetoid Squamous Cell Carcinoma In Situ | |
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| Clonal Seborrheic Keratosis | |
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| Melanocytic Proliferations | |
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| Melanoma In Situ or Microinvasive, Superficial Spreading Type | |
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| Recurrent Nevus (Pseudomelanoma) | |
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| Junctional Spitz Nevus with Pagetoid Proliferation | |
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| Glandular Epithelial Proliferations | |
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| Paget's Disease | |
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| Lymphoid Proliferations | |
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| Localized Papillomatous Epithelial Lesions | |
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| With Viral Cytopathic Effects | |
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| Verruca Vulgaris | |
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| Verruca Plana | |
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| Deep Palmoplantar Warts (Myrmecia) | |
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| Condyloma Acuminatum | |
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| Molluscum Contagiosum | |
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| Parapox Virus Infections (Milker's Nodules, Orf) | |
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| Without Viral Cytopathic Effect | |
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| Seborrheic Keratosis | |
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| Irregular Proliferations Extending into the Superficial Dermis | |
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| Squamous Differentation | |
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| Inverted Follicular Keratosis | |
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| Basaloid Differentation | |
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| Basal Cell Carcinoma | |
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| Superficial Polypoid Lesions | |
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| Melanocytic Lesions | |
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| Polypoid Dermal and Compound Nevi | |
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| Spindle Cell and Stromal Lesions | |
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| Neurofibroma | |
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| Fibroepithelial Polyp | |
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| References | |
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| Disorders of the Superficial Cutaneous Reactive Unit | |
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| Superficial Perivascular Dermatitis | |
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| Superficial Perivascular Dermatitis, Mostly Lymphocytes | |
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| Viral Exanthem | |
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| Tinea Versicolor | |
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| Lupus Erythematosus, Acute | |
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| Guttate Parapsoriasis | |
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| Superficial Perivascular Dermatitis with Eosinophils | |
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| Morbilliform Drug Eruption | |
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| Allergic Urticarial Reaction (Morbilliform Drug Eruption) | |
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| Urticaria | |
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| Urticarial Bullous Pemphigoid | |
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| Superficial Perivascular Dermatitis with Neutrophils | |
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| Erysipelas | |
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| Erysipelas/Cellulitis | |
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| Superficial Perivascular Dermatitis with Plasma Cells | |
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| Secondary Syphilis | |
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| Kaposi's Sarcoma, Patch Stage | |
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| Superficial Perivascular Dermatitis with Extravasated Red Cells | |
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| Pityriasis Rosea | |
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| Pityriasis Lichenoides | |
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| Pigmented Purpuric Dermatosis | |
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| Superficial Perivascular Dermatitis, Melanophages Prominent | |
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| Postinflammatory Hyperpigmentation | |
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| Superficial Perivascular Dermatitis, Mast Cells Predominant | |
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| Urticaria Pigmentosa | |
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| Superficial Dermatitis with Spongiosis (Spongiotic Dermatitis) | |
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| Spongiotic Dermatitis, Lymphocytes Predominant | |
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| Nummular Dermatitis (Eczema) | |
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| Eczematous Dermatitis | |
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| Spongiotic Dermatitis, with Eosinophils | |
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| Allergic Contact Dermatitis | |
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| Spongiotic Dermatitis, with Plasma Cells | |
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| Spongiotic Dermatitis, with Neutrophils | |
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| Seborrheic Dermatitis | |
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| Superficial Dermatitis with Epidermal Atrophy (Atrophic Dermatitis) | |
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| Atrophic Dermatitis, Scant Inflammatory Infiltrates | |
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| Aged Skin | |
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| Radiation Dermatitis (see also section VF1) | |
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| Atrophic Dermatitis, Lymphocytes Predominant | |
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| Dermatomyositis | |
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| Atrophic Dermatitis with Papillary Dermal Sclerosis | |
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| Lichen Sclerosus et Atrophicus | |
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| Superficial Dermatitis with Psoriasiform Proliferation (Psoriasiform Dermatitis) | |
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| Psoriasiform Dermatitis, Mostly Lymphocytes | |
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| Pityriasis Rubra Pilaris | |
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| Mycosis Fungoides, Patch/Plaque Stage | |
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| Parapsoriasis | |
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| Psoriasiform Dermatitis, with Plasma Cells | |
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| Lichen Simplex Chronicus (see also section IIIE) | |
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| Psoriasiform Dermatitis, with Eosinophils | |
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| Chronic Allergic Dermatitis | |
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| Psoriasiform Dermatitis, Neutrophils Prominent (Neutrophilic/Pustular Psoriasiform Dermatitis) | |
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| Psoriasis Vulgaris | |
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| Superficial Dermatitis with Irregular Epidermal Proliferation (Hypertrophic Dermatitis) | |
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| Hypertrophic Dermatitis, Lymphocytes Predominant | |
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| Prurigo Nodularis | |
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| Irregular Epidermal Proliferation, Plasma Cells Present | |
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| Actinic Keratosis (see also section IIA1) | |
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| Irregular Epidermal Proliferation, Neutrophils Prominent | |
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| Keratoacanthoma (see also section VIB1) | |
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| Irregular Epidermal Proliferation Above a Neoplasm | |
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| Superficial Dermatitis with Lichenoid Infiltrates (Lichenoid Dermatitis) | |
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| Lichenoid Dermatitis, Lymphocytes Exclusively | |
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| Lichen Planus | |
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| Graft-Versus-Host Disease | |
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| Mycosis Fungoides, Patch/Plaque Stage | |
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| Lichenoid Dermatitis, Lymphocytes Predominant | |
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| Lichen Planus-like Keratosis (Benign Lichenoid Keratosis) | |
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| Lichenoid Dermatitis, Eosinophils Present | |
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| Lichenoid Drug Eruptions | |
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| Lichenoid Dermatitis, Plasma Cells Present | |
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| Lichenoid Actinic Keratosis | |
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| Secondary Syphilis | |
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| Lichenoid Dermatitis, with Melanophages | |
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| Lichenoid Dermatitis, Histiocytes Predominant | |
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| Lichen Nitidus | |
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| Lichenoid Dermatitis, Mast Cells Predominant | |
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| Urticaria Pigmentosa, Lichenoid Examples (see also section IIIA2) | |
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| Lichenoid Dermatitis with Dermal Fibroplasia | |
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| Mycosis Fungoides, Patch Stage | |
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| Superficial Vasculitis and Vasculopathies | |
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| Neutrophilic Vasculitis | |
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| Cutaneous Necrotizing (Leukocytoclastic) Vasculitis | |
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| Gonococcemia | |
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| Mixed Cell and Granulomatous Vasculitis | |
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| Granuloma Faciale | |
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| Vasculopathies with Lymphocytic Inflammation | |
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| Pigmented Purpuric Dermatoses | |
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| Vasculopathies with Scant Inflammation | |
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| Stasis Dermatitis | |
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| Thrombotic, Embolic, and Other Microangiopathies | |
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| Lupus Anticoagulant and Antiocardiolipin Syndromes | |
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| Superficial Dermatitis with Interface Vacuoles (Interface Dermatitis) | |
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| Vacuolar Dermatitis, Apoptotic/Necrotic Cells Prominent | |
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| Erythema Multiforme | |
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| Fixed Drug Eruption | |
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| Graft-Versus-Host Disease, Acute | |
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| Vacuolar Dermatitis, Apoptotic Cells Usually Absent | |
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| Dermatomyositis | |
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| Vacuolar Dermatitis, Variable Apoptosis | |
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| Subacute Cutaneous Lupus Erythematosus | |
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| Vacuolar Dermatitis, Basement Membranes Thickened | |
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| Discoid Lupus Erythematosus | |
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| References | |
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| Acantholytic, Vesicular, and Pustular Disorders | |
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| Subcorneal or Intracorneal Separation | |
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| Sub/Intracorneal Separation, Scant Inflammatory Cells | |
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| Pemphigus Foliaceus | |
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| Sub/Intracorneal Separation, Neutrophils Prominent | |
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| Impetigo Contagiosa | |
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| Folliculitis with Subcorneal Pustule Formation | |
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| Acute Generalized Exanthematous Pustulosis | |
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| Sub/Intracorneal Separation, Eosinophils Predominant | |
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| Erythema Toxicum Neonatorum | |
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| Intraspinous Keratinocyte Separation, Spongiotic | |
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| Intraspinous Spongiosis, Scant Inflammatory Cells | |
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| Friction Blister | |
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| Intraspinous Spongiosis, Lymphocytes Predominant | |
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| Dyshidrotic Dermatitis (Eczema) | |
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| Intraspinous Spongiosis, Eosinophils Present | |
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| Acute Contact Dermatitis (see also section IIIB1a) | |
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| Bullous Pemphigoid, Urticarial Phase (see also section IVE3) | |
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| Incontinentia Pigmenti | |
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| Intraspinous Spongiosis, Neutrophils Predominant | |
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| Dermatophytosis | |
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| Intraspinous Keratinocyte Separation, Acantholytic | |
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| Intraspinous Acantholysis, Scant Inflammatory Cells | |
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| Familial Benign Pemphigus (Hailey-Hailey Disease) | |
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| Transient Acantholytic Dermatosis (Grover's Disease) | |
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| Intraspinous Acantholysis, Predominant Lymphocytes | |
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| Herpes Simplex | |
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| Varicella-Zoster Infection | |
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| Toxic Epidermal Necrolysis and Erythema Multiforme with Intraepidermal Vesiculation | |
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| Intraspinous Acantholysis, Eosinophils Present | |
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| Pemphigus Vegetans | |
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| Intraspinous Separation, Neutrophils or Mixed Cell Types | |
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| IgA Pemphigus | |
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| Suprabasal Keratinocyte Separation | |
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| Suprabasal Vesicles, Scant Inflammatory Cells | |
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| Keratosis Follicularis (Darier's Disease) | |
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| Warty Dyskeratoma | |
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| Suprabasal Separation, Lymphocytes and Plasma Cells | |
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| Acantholytic Actinic Keratosis | |
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| Suprabasal Vesicles, Lymphocytes and Eosinophils | |
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| Pemphigus Vulgaris | |
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| Subepidermal Vesicular Dermatitis | |
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| Subepidermal Vesicles, Scant/No Inflammation | |
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| Porphyria Cutanea Tarda and Other Porphyrias | |
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| Subepidermal Vesicles, Lymphocytes Predominant | |
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| Bullous Lichen Planus | |
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| Polymorphous (Polymorphic) Light Eruption | |
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| Lichen Sclerosus et Atrophicus | |
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| Subepidermal Vesicles, Eosinophils Prominent | |
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| Bullous Pemphigoid | |
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| Bullous Drug Eruption | |
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| Herpes Gestationis | |
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| Subepidermal Vesicles, Neutrophils Prominent | |
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| Dermatitis Herpetiformis | |
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| Linear IgA Dermatosis | |
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| Bullous Lupus Erythematosus | |
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| Subepidermal Vesicles, Mast Cells Prominent | |
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| Bullous Mastocytosis | |
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| References | |
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| Perivascular, Diffuse, and Granulomatous Infiltrates of the Reticular Dermis | |
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| Superficial and Deep Perivascular Infiltrates without Vascular Damage or Vasculitis | |
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| Perivascular Infiltrates, Lymphocytes Predominant | |
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| Erythema Annulare Centrifugum | |
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| Erythema Chronicum Migrans (see also section VA5) | |
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| Tumid Lupus Erythematosus | |
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| Perivascular Infiltrates, Neutrophils Predominant | |
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| Cellulitis | |
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| Perivascular Infiltrates, Lymphocytes and Eosinophils | |
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| Papular Urticaria | |
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| Pruritic Urticarial Papules and Plaques of Pregnancy | |
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| Perivascular Infiltrates, with Plasma Cells | |
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| Secondary Syphilis | |
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| Tertiary Syphilis | |
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| Morphea (see also section VF) | |
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| Perivascular Infiltrates, Mixed Cell Types | |
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| Erythema Chronicum Migrans | |
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| Vasculitis and Vasculopathies | |
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| Vascular Damage, Scant Inflammatory Cells | |
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| Degos' Syndrome | |
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| Vasculitis, Lymphocytes Predominant | |
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| Pernio | |
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| Pityriasis Lichenoides et Varioliformis Acuta | |
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| Cytomegalovirus Infection | |
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| Erythema Chronicum Migrans | |
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| Vasculitis, Neutrophils Prominent | |
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| Polyarteritis Nodosa and Microscopic Polyangiitis | |
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| Leukocytoclastic Vasculitis | |
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| Erythema Elevatum Diutinum | |
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| Vasculitis, Mixed Cell Types and/or Granulomas | |
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| Churg--Strauss Syndrome (Allergic Granulomatosis) | |
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| Papulonecrotic Tuberculid | |
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| Thrombotic and Other Microangiopathies | |
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| Calciphylaxis | |
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| Livedo Reticularis | |
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| Diffuse Infiltrates of the Reticular Dermis | |
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| Diffuse Infiltrates, Lymphocytes Predominant | |
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| Jessner's Lymphocytic Infiltration of the Skin | |
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| Leukemia Cutis | |
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| Diffuse Infiltrates, Neutrophils Predominant | |
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| Acute Febrile Neutrophilic Dermatosis (Sweet's Syndrome) | |
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| Erysipelas/Cellulitis | |
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| Diffuse Infiltrates, "Histiocytoid" Cells Predominant | |
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| Lepromatous Leprosy | |
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| Langerhans Cell Histiocytosis (Histiocytosis X) | |
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| Xanthelasma | |
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| Diffuse Infiltrates, Plasma Cells Prominent | |
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| Secondary Syphilis | |
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| Diffuse Infiltrates, Mast Cells Predominant | |
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| Diffuse Infiltrates, Eosinophils Predominant | |
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| Eosinophilic Cellulitis (Wells' Syndrome) | |
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| Tick Bite | |
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| Diffuse Infiltrates, Mixed Cell Types | |
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| Cutaneous Leishmaniasis | |
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| Diffuse Infiltrates, Pigment Cells | |
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| Nevi of Ota and Ito and Dermal Melanocyte Hamartoma | |
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| Diffuse Infiltrates, Extensive Necrosis | |
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| Gangrenous Ischemic Necrosis | |
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| Diffuse or Nodular Infiltrates of the Reticular Dermis with Epidermal Proliferation | |
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| Epidermal Proliferation with Mixed Cellular Infiltrates | |
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| North American Blastomycosis | |
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| Deep Fungal Infections (General) | |
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| Nodular Inflammatory Infiltrates of the Reticular Dermis: Granulomas, Abscesses, and Ulcers | |
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| Epithelioid Cell Granulomas without Necrosis | |
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| Sarcoidosis | |
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| Lupus Vulgaris | |
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| Epithelioid Cell Granulomas with Necrosis | |
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| Tuberculosis | |
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| Tuberculoid Leprosy | |
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| Lupus Miliaris Disseminatus Facei (Granulomatous Rosacea) | |
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| Palisading Granulomas | |
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| Granuloma Annulare | |
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| Necrobiosis Lipoidica Diabeticorum | |
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| Necrobiotic Xanthogranuloma with Paraproteinemia | |
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| Rheumatoid Nodules | |
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| Mixed Cell Granulomas | |
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| Foreign Body Reactions | |
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| Inflammatory Nodules with Prominent Eosinophils | |
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| Angiolymphoid Hyperplasia with Eosinophilia and Kimura's Disease | |
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| Scabetic Nodule | |
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| Inflammatory Nodules with Mixed Cell Types | |
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| Sporotrichosis | |
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| Inflammatory Nodules with Necrosis and Neutrophils (Abscesses) | |
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| Botryomycosis | |
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| Chromoblastomycosis | |
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| Inflammatory Nodules with Prominent Necrosis | |
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| Aspergillosis | |
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| Chronic Ulcers and Sinuses Involving the Reticular Dermis | |
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| Chancroid | |
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| Pyoderma Gangrenosum | |
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| Chondrodermatitis Nodularis Helicis | |
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| Dermal Matrix Fiber Disorders | |
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| Fiber Disorders, Collagen Increased | |
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| Scleroderma | |
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| Radiation Dermatitis | |
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| Fiber Disorders, Collagen Reduced | |
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| Focal Dermal Hypoplasia Syndrome (Goltz) | |
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| Fiber Disorders, Elastin Increased or Prominent | |
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| Pseudoxanthoma Elasticum | |
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| Fiber Disorders, Elastin Reduced | |
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| Macular Atrophy (Anetoderma) | |
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| Fiber Disorders, Perforating | |
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| Elastosis Perforans Serpiginosum | |
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| Reactive Perforating Collagenosis | |
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| Perforating Folliculitis | |
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| Deposition of Material in the Dermis | |
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| Increased Normal Nonfibrous Matrix Constituents | |
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| Digital Mucous Cysts and Focal Mucinosis | |
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| Mucinosis in Lupus Erythematosus | |
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| Myxedema | |
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| Scleredema | |
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| Scleromyxedema | |
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| Increased Material Not Normally Present in the Dermis | |
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| Gout | |
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| Colloid Milium | |
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| Idiopathic Calcinosis Cutis | |
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| Cryoglobulinemia | |
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| Keratin Granuloma | |
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| Suture Granuloma | |
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| Parasitic Infestations of the Skin | |
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| Larva Migrans Eruption | |
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| References | |
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| Tumors and Cysts of the Dermis and Subcutis | |
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| Small Cell Tumors | |
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| Tumors of Lymphocytes or Hemopoietic Cells | |
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| Cutaneous B-Cell Lymphoma | |
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| Cutaneous Diffuse B-Cell Lymphoma | |
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| Cutaneous T-Cell Lymphoma, Tumor Stage | |
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| Tumors of Lymphocytes and Mixed Cell Types | |
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| B-Cell Cutaneous Lymphoid Hyperplasia (Pseudolymphoma, Lymphocytoma Cutis) | |
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| Tumors of Plasma Cells | |
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| Cutaneous Plasmacytoma and Multiple Myeloma | |
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| Small Round Cell Tumors | |
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| Cutaneous Small Cell Undifferentiated Carcinoma (Merkel Cell Tumor) | |
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| Metastatic Small Cell Carcinoma | |
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| Large Polygonal and Round Cell Tumors | |
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| Squamous Cell Tumors | |
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| Squamous Cell Carcinoma, Deep | |
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| Keratoacanthoma | |
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| Inverted Follicular Keratosis | |
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| Pseudoepitheliomatous Hyperplasia | |
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| Proliferating Trichilemmal Cyst (Pilar Tumor) | |
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| Prurigo Nodularis | |
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| Adenocarcinomas | |
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| Metastatic Adenocarcinoma | |
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| Metastatic Pulmonary Adenocarcinoma | |
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| Metastatic Mammary Carcinoma | |
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| Melanocytic Tumors | |
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| Melanocytic Nevi, Acquired and Congenital Types | |
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| Acquired Nevi | |
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| Congenital Nevus | |
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| Acral Nevus | |
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| Balloon Cell Nevus | |
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| Halo Nevus | |
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| Regressing Melanoma | |
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| Blue Nevus | |
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| Cellular Blue Nevus | |
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| Deep Penetrating Nevus | |
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| Spitz Nevus | |
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| Nodular Melanoma | |
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| Metastatic Malignant Melanoma | |
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| Metastatic Malignant Melanoma, Satellite Lesion | |
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| Epidermotropic Metastatic Melanoma | |
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| Eccrine Tumors | |
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| Eccrine Spiradenoma | |
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| Cylindroma | |
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| Poroma | |
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| Syringoma | |
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| Nodular Hidradenoma | |
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| Clear Cell Syringoma | |
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| Chondroid Syringoma | |
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| Microcystic Adnexal Carcinoma | |
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| Mucinous Eccrine Carcinoma | |
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| Apocrine Tumors | |
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| Tubular Apocrine Adenoma | |
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| Syringocystadenoma Papilliferum | |
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| Pilar Tumors | |
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| Trichoepithelioma | |
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| Dilated Pore of Winer | |
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| Pilar Sheath Acanthoma | |
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| Trichilemmoma | |
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| Trichofolliculoma | |
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| Fibrofolliculoma | |
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| Trichoadenoma | |
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| Pilomatricoma | |
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| Sebaceous Tumors | |
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| Sebaceous Adenoma and Sebaceous Epithelioma (Sebaceoma) | |
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| Sebaceous Hyperplasia | |
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| Nevus Sebaceus of Jadassohn | |
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| Sebaceous Epithelioma | |
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| Sebaceous Carcinoma | |
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| "Histiocytoid" Tumors | |
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| Xanthomas and Xanthelasma | |
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| Eruptive Xanthoma | |
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| Verruciform Xanthoma | |
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| Juvenile Xanthogranuloma | |
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| Reticulohistiocytosis | |
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| Tumors of Large Lymphoid Cells | |
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| Cutaneous CD30+ (Ki-1+) Anaplastic Large Cell Lymphoma | |
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| Lymphomatoid Papulosis | |
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| Leukemia Cutis | |
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| Mast Cell Tumors | |
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| Urticaria Pigmentosa, Nodular Lesions | |
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| Tumors with Prominent Necrosis | |
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| Epithelioid Sarcoma | |
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| Miscellaneous and Undifferentiated Epithelial Tumors | |
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| Granular Cell Tumor | |
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| Cellular Neurothekeoma | |
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| Metastatic Malignant Melanoma | |
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| Spindle Cell, Pleomorphic and Connective Tissue Tumors | |
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| Fibrohistiocytic Spindle Cell Tumors | |
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| Dermatofibroma | |
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| Cellular Dermatofibroma | |
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| Dermatofibrosarcoma Protuberans | |
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| Atypical Fibroxanthoma | |
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| Malignant Fibrous Histiocytoma | |
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| Fibrous Papule (Angiofibroma) | |
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| Recurrent Infantile Digital Fibromatosis | |
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| Keloid | |
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| Acquired Digital Fibrokeratoma | |
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| Giant Cell Tumor of Tendon Sheath | |
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| Nodular Fasciitis | |
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| Mucocele | |
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| Digital Mucous Cyst | |
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| Cutaneous Myxoma | |
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| Schwannian/Neural Spindle Cell Tumors | |
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| Neurofibromas | |
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| Neurofibromatosis | |
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| Schwannoma (Neurilemmoma) | |
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| Palisaded Encapsulated Neuroma | |
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| Accessory Digit | |
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| Spindle Cell Tumors of Muscle | |
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| Leiomyomas | |
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| Angioleiomyoma | |
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| Smooth Muscle Hamartoma | |
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| Leiomyosarcoma | |
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| Melanocytic Spindle Cell Tumors | |
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| Desmoplastic Melanoma | |
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| Tumors and Proliferations of Angiogenic Cells | |
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| Pyogenic Granuloma (Lobular Capillary Hemangioma) | |
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| Intravascular Papillary Endothelial Hyperplasia (Masson's Hemangio-Endotheliome Vegetant Intravasculaire) | |
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| Stasis Dermatitis with Vascular Proliferation (Acroangiodermatitis, Pseudo-Kaposi's Sarcoma) | |
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| Kaposi's Sarcoma | |
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| Cutaneous Angiosarcoma | |
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| Angiokeratoma | |
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| Arteriovenous Hemangioma | |
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| Cavernous Hemangioma | |
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| Cherry Hemangioma | |
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| Microvenular Hemangioma | |
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| Cutaneous Lymphangioma | |
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| Venous Lake | |
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| Epithelioid Hemangioendothelioma | |
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| Glomangioma | |
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| Subungual Glomus Tumor | |
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| Tumors of Adipose Tissue | |
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| Nevus Lipomatosus Superficialis | |
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| Lipoma | |
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| Angiolipomas | |
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| Spindle Cell Lipoma | |
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| Pleomorphic Lipomas | |
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| Liposarcoma | |
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| Tumors of Cartilaginous Tissue | |
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| Tumors of Osseous Tissue | |
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| Albright's Hereditary Osteodystrophy and Osteoma Cutis | |
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| Cysts of the Dermis and Subcutis | |
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| Pilar Differentiation | |
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| Epidermal or Infundibular Cyst | |
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| Trichilemmal (Pilar) Cyst | |
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| Steatocystoma | |
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| Vellus Hair Cyst | |
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| Eccrine and Similar Differentiation | |
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| Eccrine Hidrocystoma | |
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| Median Raphe Cyst | |
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| Bronchogenic Cyst | |
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| Cutaneous Endometriosis | |
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| Apocrine Differentiation | |
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| Apocrine Hidrocystoma | |
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| Hidradenoma Papilliferum | |
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| References | |
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| Inflammatory and Other Benign Disorders of Skin Appendages | |
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| Pathology Involving Hair Follicles | |
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| Scant Inflammation | |
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| Androgenetic Alopecia | |
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| Trichotillomania | |
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| Telogen Effluvium | |
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| Keratosis Pilaris | |
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| Lymphocytes Predominant | |
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| Alopecia Areata | |
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| Lichen Planopilaris | |
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| Discoid Lupus Erythematosus of the Scalp | |
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| Alopecia Mucinosa | |
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| Rosacea | |
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| Eosinophils Prominent | |
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| Eosinophilic Pustular Folliculitis | |
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| Neutrophils Prominent | |
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| Acute Deep Folliculitis (Furuncle) | |
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| Tinea Capitis | |
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| Majocchi's Granuloma | |
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| Herpes Simplex Viral Folliculitis | |
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| Plasma Cells Prominent | |
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| Folliculitis (Acne) Keloidalis Nuchae | |
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| Tinea Capitis | |
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| Fibrosing and Suppurative Follicular Disorders | |
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| Follicular Occlusion Triad (Hidradenitis Suppurativa, Acne Conglobata, and Perifolliculitis Capitis Abscedens et Suffodiens) | |
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| Folliculitis Decalvans | |
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| Pathology Involving Sweat Glands | |
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| Scant Inflammation | |
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| Eccrine Nevus | |
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| Lymphocytes Predominant | |
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| Lichen Striatus | |
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| With Plasma Cells | |
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| Lupus Erythematosus | |
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| With Eosinophils | |
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| Arthropod Bite | |
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| With Neutrophils | |
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| Neutrophilic Eccrine Hidradenitis | |
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| Pathology Involving Nerves | |
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| Lymphocytic Infiltrates | |
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| Mixed Inflammatory Infiltrates | |
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| Nerve Involvement in Leprosy | |
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| |
| Erythema Chronica Migrans with Nerve Involvement | |
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| Arthropod Bite Reaction with Nerve Involvement | |
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| Neoplastic Infiltrates | |
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| Neurotropic Melanoma | |
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| Pathology of the Nails | |
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| Lymphocytic Infiltrates | |
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| Acral Lentiginous Melanoma | |
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| Lymphocytes with Neutrophils | |
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| Onychomycosis | |
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| Vesiculobullous Diseases | |
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| |
| Darier's Disease | |
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| |
| Parasitic Infestations | |
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| |
| Scabies | |
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| References | |
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| |
| Disorders of the Subcutis | |
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| Subcutaneous Vasculitis and Vasculopathy (Septal or Lobular) | |
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| Neutrophilic Vasculitis | |
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| Subcutaneous Polyarteritis Nodosa | |
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| Lymphocytic Vasculitis | |
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| Granulomatous Vasculitis | |
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| Erythema Induratum (Nodular Vasculitis) | |
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| Septal Panniculitis Without Vasculitis | |
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| Septal Panniculitis, Lymphocytes and Mixed Infiltrates | |
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| Erythema Nodosum | |
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| |
| Septal Panniculitis, Granulomatous | |
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| |
| Subcutaneous Granuloma Annulare | |
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| Septal Panniculitis, Sclerotic | |
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| |
| Scleroderma and Morphea | |
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| Lobular Panniculitis Without Vasculitis | |
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| Lobular Panniculitis, Lymphocytes Predominant | |
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| |
| Lupus Erythematosus Panniculitis | |
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| Lobular Panniculitis, Lymphocytes and Plasma Cells | |
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| Lobular Panniculitis, Neutrophilic | |
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| Lobular Panniculitis, Eosinophils Prominent | |
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| Lobular Panniculitis, Histicytes Prominent | |
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| |
| Histiocytic Cytophagic Panniculitis (Subcutaneous T-Cell Lymphoma with Hemophagocytic Syndrome) | |
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| Lobular Panniculitis, Mixed with Foam Cells | |
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| |
| Relapsing Febrile Nodular Nonsuppurative Panniculitis (Weber-Christian Disease) | |
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| Lobular Panniculitis, Granulomatous | |
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| |
| Subcutaneous Sarcoidosis | |
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| |
| Lobular Panniculitis, Crystal Deposits, Calcifications | |
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| |
| Subcutaneous Fat Necrosis of the Newborn | |
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| |
| Calcifying Panniculitis (Calciphylaxis) | |
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| |
| Lobular Panniculitis, Necrosis Prominent | |
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| |
| Subcutaneous Nodular Fat Necrosis in Pancreatic Disease | |
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| Lobular Panniculitis, Embryonic Fat Pattern | |
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| Localized Lipoatrophy and Lipodystrophy | |
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| Lobular Panniculitis, Miscellaneous | |
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| |
| Lipomembranous Change or Lipomembranous Panniculitis | |
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| |
| Mixed Lobular and Septal Panniculitis | |
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| |
| With Hemorrhage or Sclerosis | |
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| |
| Panniculitis Due to Physical or Chemical Agents | |
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| |
| With Many Neutrophils | |
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| |
| Necrotizing Fasciitis | |
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| |
| With Many Eosinophils | |
| |
| |
| Eosinophilic Fasciitis (Shulman's Syndrome) | |
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| |
| With Many Lymphocytes | |
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| |
| Subcutaneous Panniculitic or Lipotropic T-Cell Lymphoma | |
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| |
| |
| With Cytophagic Histiocytes | |
| |
| |
| Sinus Histiocytosis with Massive Lymphadenopathy (Rosai-Dorfman) | |
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| |
| |
| With Granulomas | |
| |
| |
| Mycobacterial Panniculitis | |
| |
| |
| Erythema Nodosum Leprosum (Type 2 Leprosy Reaction) | |
| |
| |
| |
| Subcutaneous Abscesses | |
| |
| |
| |
| With Neutrophils | |
| |
| |
| Phaeohyphomycotic Cyst | |
| |
| |
| References | |
| |
| |
| Alphabetical List of Diseases | |