Search Results for: scale

Histologic Diagnosis of Inflammatory Skin Diseases

Pityriasis alba

…cytes Very slight spongiosis in foci; lymphocytes in those foci Slight focal parakeratosis Correlation clinicopathologic The scale consists of parakeratosis and the white appearance presumably results from a decrease in the amount of melanin in the…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Ichthyoses?

…bullous congenital ichthyosiform erythroderma, as the name denotes, is an inflammatory process; true ichthyoses are not. The scales in nonbullous congenital ichthyosiform erythroderma tend to be small and delicate, rather than large and platelike….

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…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Figurate Erythemas?

…e arcuate, annular, and polycyclic outlines. The advancing rim, elevated and red, is typified further by tiny collarettes of scale positioned along its inner margin. Advancing lesions leave in their wake degrees variable of hyperpigmentation. Biopsy…

Histologic Diagnosis of Inflammatory Skin Diseases

Deep fungal infections

…c Papules and nodules result from dense nodular or diffuse mixed-cell infiltrates that extend throughout much of the dermis; scale-crusts represent collections of neutrophils and serum in zones of parakeratosis; warty appearance derives from…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…lightly psoriasiform + 10.18.1B: Mixed-cell infiltrate with pallor in the upper part of the viable epidermis in company with scale-crust = Necrolytic migratory erythema Findings identical with these are seen in acrodermatitis enteropathica,…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…in this wedge-shaped infundibulocentric infiltrate are present also in infundibular and surface epidermis, especially in the scale-crust. This condition, still thought by some authors to be related to Mucha-Habermann disease, is not an inflammatory…

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…