Search Results for: crust

Histologic Diagnosis of Inflammatory Skin Diseases

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…d granular zones, acantholytic parakeratotic cells, and scale-crust = Grover’s disease The presence of many eosinophils in the papillary dermis indicates that this lesion must have been exceedingly pruritic. A nearly direct relationship exists…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…giosis, ballooning, pallor across viable epidermis, and scale-crusts = Mucha-Habermann disease, acute  All the changes pictured have occurred beneath the original normal cornified layer, an indication that this process is of very recent onset. Other…

Histologic Diagnosis of Inflammatory Skin Diseases

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…orm + 10.2.1B: Slight edema of the papillary dermis and scale-crust = Nummular dermatitis  Changes such as these are indistinguishable from those of allergic contact dermatitis. The psoriasiform acanthosis is more than usually is seen in pityriasis r…

Dermatology Practical & Conceptual

Dermoscopic findings in reactive perforating collagenosis

…characterized by umbilicated papules and plaques with central crusted ulceration. Pruritus is the most common symptom of RPC, and the lesions are most commonly found on the extensor surfaces of the extremities. This entity is histopathologically char…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Reactive Perforating Collagenosis?

…ace, where they reside temporarily in a neutrophil-containing crust atop an ulcer. In sections stained by hematoxylin and eosin, degenerated bundles of collagen appear blue rather than the usual red, and are found not only in the upper part of the de…

Dermatology Practical & Conceptual

Saved by step sections: an unusual presentation of basal cell carcinoma

…2A, 2B, 2C) showed a well-demarcated area of ulceration with crust. Adjacent epidermis depicted irregular acanthosis and prominent spongiosis with inflammatory cells in exocytosis; superficial and mid-dermis presented a dense inflammatory infiltrate…

Histologic Diagnosis of Inflammatory Skin Diseases

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…lar dermatitis, psoriasiform + 10.22.2B: Neutrophils in scale-crust and hyphae in the original cornified layer situated above the scale-crust = Dermatophytosis Infection by superficial fungi may simulate psoriasis, as is the case here, the crucial at…

Histologic Diagnosis of Inflammatory Skin Diseases

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…, lichenoid + 10.25.4B: Predominance of lymphocytes and scale-crust atop an erosion = Lichenoid drug eruption Even at scanning magnification, a determination can be made that the diagnosis is not lichen planus, the evidence against it being the focus…