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Histologic Diagnosis of Inflammatory Skin Diseases

Images

Images 11.14.1A: Perivascular dermatosis, psoriasiform lichenoid + 11.14.1B: Lymphocytes, sparse in both the dermis and epidermis, larger in the epidermis than in dermis, solitary in the basal layer in foci, and in association with scant…

Differential Diagnosis in Dermatopathology

Differential Diagnosis

…ermis only when necrosis of keratocytes there is confluent; no eosinophils in the epidermis 1. Neutrophils and eosinophils in the epidermis of early lesions independent of the few scattered necrotic keratocytes present there 2. Infiltrate of inflam…

Histologic Diagnosis of Inflammatory Skin Diseases

Erysipelas

Erysipelas Synonyms St. Anthony’s fire Ignis sacer Erysipele Erysipela Presentation stereotypical Age and sex Any age and either sex, but with a predilection for older persons with diabetes, peripheral vascular disease, and abuse of alcohol…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

Images 10.29.1A: Perivascular and interstitial dermatitis + 10.29.1B: An infiltrate of lymphocytes, neutrophils, and eosinophils = Erysipelas Cellulitis, of which erysipelas is the stereotype, is an example of phlegmonous inflammation, i….

Histologic Diagnosis of Inflammatory Skin Diseases

Erythema marginatum

Erythema marginatum Synonyms Erythema marginatum rheumaticum Erythema annulare rheumaticum Presentation stereotypical Age and sex Children of both sexes who have rheumatic fever with carditis; rarely in adults Distribution of lesions Localized, es…

Histologic Diagnosis of Inflammatory Skin Diseases

Identification of Basic Patterns: Skin: Vasculitis

See Fig. 5.218 A&B. Figure 5.218 Vasculitis. A. Small vessel. B. Large vessel. Before a reasoned and reasonable method for diagnosis histopathologic of vasculitis in skin and subcutaneous fat can be formulated, a definition of vasculitis must…

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