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Histologic Diagnosis of Inflammatory Skin Diseases

Images

…inosis in company with an infiltrate of small lymphocytes and eosinophils = Mycosis fungoides, alopecia mucinosa expression ┬áThe infiltrate is present not only in the dermis, but also in infundibula and follicles, both of which house deposits of muci…

Differential Diagnosis in Dermatopathology

Differential Diagnosis

…rmis 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 inflamm…

Histologic Diagnosis of Inflammatory Skin Diseases

Erysipelas

…of neutrophils, but also of lymphocytes and, episodically, of eosinophils around venules Widely dilated venules and lymphatics in the upper part of the dermis Edema of the papillary dermis Fully developed Moderately dense infiltrate of neutrophils…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…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.e., one in which neutrophils are scattered amid collagen bundles in…

Histologic Diagnosis of Inflammatory Skin Diseases

Erythema marginatum

…s of a perivascular and interstitial mixed-cell infiltrate of eosinophils, as well as of neutrophils, it sometimes involving the venules of both plexuses. Laboratory confirmation Throat culture for group A streptococcus Antistreptolysin O (ASO) t…

Histologic Diagnosis of Inflammatory Skin Diseases

Identification of Basic Patterns: Skin: Vasculitis

…ion. Neutrophils are joined by lymphocytes, plasma cells, and eosinophils. When the findings are on a face, the condition is termed “granuloma faciale,” on an extremity, “erythema elevatum diutinum.” Figure 5.227 A&B. N…

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