Search Results for: crust

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Histologic Diagnosis of Inflammatory Skin Diseases

Erythema multiforme

…beneath a subepidermal blister Slight parakeratosis or scale-crust sometimes Correlation clinicopathologic Macules result from spongiosis, ballooning, and a superficial perivascular infiltrate of lymphocytes. Intraepidermal blisters develop secondar…

Differential Diagnosis in Dermatopathology

Discussions

…in mitosis. The epidermis may be thinned centrally and with a crust atop it. The dermis may be involved throughout the width of it, the process sometimes extending into the subcutaneous fat. Hemorrhage and fibroplasia may be present in both condition…

Differential Diagnosis in Dermatopathology

Discussions

…acent to it—often share findings histopathologic: scale-crusts, psoriasiform acanthosis, foci of spongiosis, dilated blood vessels in an edematous papillary dermis, and lymphocytes situated in both the dermis and the epidermis, especially in fo…

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 of…

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) Pemphig…

Dermatology Practical & Conceptual

The dermatoscopic universe of basal cell carcinoma

…n as superficial fine telangiectasias; (c) thick hematogenous crust overlying ulceration, dermatoscopically seen as structureless area of black-red color; (d) strands of neoplastic cells in the background of a collagenous fibrotic stroma, correspondi…

Histologic Diagnosis of Inflammatory Skin Diseases

Prurigo pigmentosa

…tic urticarial papules and plaques, papulovesicles, vesicles, crusted papules, scaly papules, and pigmented macules Course Papules occur in crops, extraordinarily pruritic at the outset; eruption waxes and wanes, intervals of freedom entirely from ne…

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