Search Results for: scale

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Histologic Diagnosis of Inflammatory Skin Diseases

Arthropod assaults

…ter of the lesion is a clue to an insect “bite.” A vesicle, vesiculopustule, erosion or ulceration, and crust or scale-crust in a single focus directly above the base of a wedge-shaped infiltrate of inflammatory cells is a clue to an…

Histologic Diagnosis of Inflammatory Skin Diseases

Pruritic urticarial papules and plaques of pregnancy

…mmatory cells and, at times, by foci of spongiosis. Slight edema in the upper part of the dermis also may contribute. Subtle scale consists of parakeratotic cells. Differential diagnosis histopathologic Urticaria spares the epidermis, and the…

Histologic Diagnosis of Inflammatory Skin Diseases

Lichen striatus

…dermis and even more numerous necrotic keratocytes in the epidermis and papillary dermis Correlation clinicopathologic Tiny scales are formed of mounds of parakeratosis and scale-crusts, and papules are composed of spongiosis, an acanthotic…

Large cell acanthoma: a debate throughout the decades

Large cell acanthoma: a debate throughout the decades

…atures in a case of ours were a brown, “broken up” pseudonetwork, scattered gray, brown dots and foci of surface scale (Figure 1A-C). Figure 1A. A sharply demarcated patch on sun exposed skin. [Copyright: ©2014 Patsatsi et al.] Figure…

Differential Diagnosis in Dermatopathology

Mucha-Habermann disease vs. Secondary syphilis

An inflammatory disease characterized by lesions with arcuate, annular, and serpiginous outlines and by collarettes of scale on the inner margin of lesions that extend outward in centrifugal fashion, disappearing in months as a rule in the absence…

Histologic Diagnosis of Inflammatory Skin Diseases

Gianotti-Crosti disease

…and/or scale-crusts Late Same as in a lesion developed fully, but with less spongiosis, more acanthosis, and more prominent scale-crusts Correlation clinicopathologic Papules result from spongiosis, edema of the papillary dermis, and a perivascular…

Histologic Diagnosis of Inflammatory Skin Diseases

Pemphigus foliaceus

…t themselves in several ways. In some instances, flaccid blisters are apparent, whereas in others no blisters are seen, only scale-crusts being observable. That the scale-crusts are manifestations of a blistering disease may be inferred because they…

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