Color Atlas of Differential Diagnosis in Dermatopathology

Dermatopathology is a subspecialty of both dermatology and pathology that studies causes and effects of skin disorders at a microscopic level. This colour atlas is a comprehensive guide to the diagnosis and management of dermatological disorders by correlating pathological results with clinical features. Written from the perspective of both pathologists and dermatologists, the book begins with an introduction to the normal pattern of skin. Each of the following chapters examines a different skin disorder, first providing a detailed description of the disease and its clinical features, then criteria for diagnosis, differential diagnosis and potential pitfalls. Written by an internationally recognised author team from Utah and Pennsylvania, this invaluable guide is highly illustrated with nearly 800 clinical and histological photographs with detailed descriptions. Key points Comprehensive guide to diagnosis and management of skin diseases through pathology Highly useful for both dermatologists and pathologists Internationally recognised US author team Includes nearly 800 clinical and histological photographs Contents 1 2. The Spongiotic and Psoriasiform Patterns 19 • The Spongiotic Pattern 21 • Simulators of Spongiotic Dermatitis 29 • The Psoriasiform Pattern 37 3. The Interface and Perivascular/Periadnexal Patterns 45 1. The Normal Skin Pattern • Findings within Stratum Corneum 3 • Findings within the Dermis 8 • The Vacuolar Pattern 47 • Interface Drug Eruption 55 • The Lichenoid Pattern 58 • The Pityriasiform Pattern 70 • The Interface and Perivascular/Periadnexal Patterns 4. The Blistering and Acantholytic Patterns • The Intraepidermal Blistering Pattern 85 • The Subepidermal Blistering Pattern 103 5. Follicular Processes • Infectious Bacterial Folliculitis 119 • Majocchi’s Granuloma 120 • Herpes Zoster 121 • Noninfectious Causes of Folliculitis 122 • Alopecia 125 6. The Nodular and Diffuse Dermal Infiltrative Patterns 133 • The Granulomatous Pattern 135 • The Palisading Granulomatous Pattern 167 • The Neutrophilic/Suppurative Dermatitis Pattern 172 • The Diffuse Histiocytic Dermatitis Pattern 182 • The Lymphoplasmacytic Dermatitis Pattern 192 • Dermal Infestations and Arthropod Bite Reactions 194 7. The Vasculopathic Pattern • The Occlusive Vasculopathy Pattern 201 • The Acute Vasculitis Pattern 208 • The Fibrosing Vasculitis Pattern 216 • Vasculitis with Macrophages/Granulomas 8. Panniculitis • Septal Panniculitis 225 • Lobular Panniculitis Lymphocytes Predominate • Lobular Panniculitis—Neutrophils Predominate • Lobular Panniculitis—Histiocytes Predominate • Noninflammatory Panniculitides 232 9. Fibrosing Dermatitis • Diseases with Decreased Number of Fibroblasts • Diseases with Increased Number of Fibroblasts xii 10. The Depositional Pattern • Deposits of Amorphous Eosinophilic Material (“Hyaline” Deposition) • Amyloidoses 249 • Mucinous/Myxoid Deposits 254 • Lichen Myxedematosus 254 • Pretibial Myxedema (Localized Myxedema) • Other Deposits 256 • Gout (and Pseudogout) 256 • Calcinosis Cutis (and Osteoma Cutis) 257 11. The Melanocytic Tumors Index 511