Search Results for: acanthosis

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Histologic Diagnosis of Inflammatory Skin Diseases

Grover’s disease

…re hyperkeratotic. Pemphigus vulgaris, when developed fully, is not focal and does not show acantholytic dyskeratotic cells, acanthosis, or parakeratosis; infundibular epidermis and epithelial structures of adnexa tend to be involved in the same…

Melanoma arising in a giant nevus spilus maculosus

Melanoma arising in a giant nevus spilus maculosus

…us spilus maculosus. Figures 5A-E. Punch biopsy of the speckled lentiginous nevus. The biopsy was taken from the thigh. Mild acanthosis and hyperpigmentation of basal keratinocytes is present but there is no marked proliferation of melanocytes….

Differential Diagnosis in Dermatopathology

Differential Diagnosis

…in surface epidermis, unrelated to infundibula 6. Slight spongiosis in infundibular, as well as surface, epidermis 7. Slight acanthosis of rete ridges of even length and breadth; some suprapapillary plates may be thin 7. Slight acanthosis rete…

Human papillomavirus-induced periungual pigmented Bowen’s disease

Human papillomavirus-induced periungual pigmented Bowen’s disease

…2 Ramirez-Fort.] Histopathologic analysis of the lesion demonstrated a pigmented Bowen’s disease (Figure 3). There was acanthosis with focal hypergranulosis and parakeratosis. The epidermis was composed of atypical keratinocytes and few…

Differential Diagnosis in Dermatopathology

Differential Diagnosis

Erythema Multiforme Toxic Shock Syndrome 1. No scale-crusts 1. Scale-crusts containing neutrophils 2. No psoriasiform acanthosis 2. Psoriasiform acanthosis 3. Superficial perivascular infiltrate of lymphocytes and, episodically, a few eosinophils,…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…sion is very early in its development may be inferred from the presence of a stratum corneum still normal and the absence of acanthosis. 10.50.3A: Perivascular dermatitis, psoriasiform lichenoid + 10.50.3B: Lymphocytes and many eosinophils in…

Differential Diagnosis in Dermatopathology

Differential Diagnosis

…0 mm biopsy specimen 1. Poorly circumscribed broad lesion, practically never contained wholly in a 4.0 mm biopsy specimen 2. Acanthosis and hyperpigmentation usually; epidermis sometimes thinned in the center of the lesion 2. No acanthosis or…

From the Dermatologikum Hamburg

From the Dermatologikum Hamburg

…planation Rheumatoid neutrophilic dermatitis The section pictured in Figures 2A-P shows irregular epidermal and infundibular acanthosis and dilation of infundibula filled with neutrophils. Diffuse infiltrates are present in the dermis and are…

Histologic Diagnosis of Inflammatory Skin Diseases

Lichen striatus

…times, the junction between adnexal epithelium and the dermis Some multinucleate histiocytes present in the papillary dermis Acanthosis, sometimes psoriasiform Necrotic keratocytes disposed as individual units and often in clusters near the base of…

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