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Histologic Diagnosis of Inflammatory Skin Diseases

Erythema annulare centrifugum

…er margin of the “advancing” border; vesicles and crusts may be seen. Correlation clinicopathologic Scale is formed by mounds of parakeratosis. Papules consist of spongiosis, edema of the papillary dermis, and a perivascular infiltrate…

Histologic Diagnosis of Inflammatory Skin Diseases

Pityriasis rosea

…lovesicles and vesicles, and resolves with erosions and scale-crusts. Guttate psoriasis is marked by discrete round papules covered by scales that do not assume the form of collarettes. Tinea corporis tends to be constituted of arcuate and annular le…

Histologic Diagnosis of Inflammatory Skin Diseases

Pemphigus foliaceus

…iaceus Individual lesions Macules, patches, flaccid blisters, crusted patches, and erosions Course Protracted Variations clinical Brazilian pemphigus (fogo selvagem, wildfire, endemic pemphigus) Pemphigus erythematosus (Senear-Usher syndrome) Pemphi…

Differential Diagnosis in Dermatopathology

Discussions

…carial, often become vesicular, and of-times are covered by a crust. Because the lesions are so pruritic, evidences of excoriation in the form of erosions, ulcerations, and hemorrhagic crusts are expected. In contrast, papules of lymphomatoid papulos…

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