Differential Diagnosis in Dermatopathology

Differential Diagnosis

Keratoacanthomatous verruca vulgaris Verrucous keratoacanthoma 1. Mostly exophytic 1. Mostly endophytic 2. Shallow central crater 2. Deep central crater 3. Smooth border of rete ridges 3. Jagged outline of rete ridges 4. Individual rete ri…

Dermatology Practical & Conceptual

The dermatoscopic universe of basal cell carcinoma

…rgenziano G, et al. Dermoscopy of squamous cell carcinoma and keratoacanthoma. Arch Dermatol. 2012;148:1386–92. Lallas A, Moscarella E, Argenziano G, et al. Dermoscopy of uncommon skin tumours. Australas J Dermatol. 2014;55(1):53-62. Epub 2013 Jul…

Histologic Diagnosis of Inflammatory Skin Diseases

Incontinentia pigmenti

…ghout a crateriform proliferation of keratocytes in subungual keratoacanthoma. Various inflammatory diseases other than incontinentia pigmenti are associated with foci of spongiosis that house eosinophils, e.g., allergic contact and nummular dermatit…

Dermatology Practical & Conceptual

A verrucous plaque on the lower leg

…conditions (squamous cell carcinoma, basal cell carcinoma and keratoacanthoma). Typical copper colored muriform bodies can be identified by direct microscopic examination via a KOH preparation. Dermatopathological examination of the lesions reveals e…

Differential Diagnosis in Dermatopathology

Discussions

…ll carcinoma are verrucous carcinoma and the various types of keratoacanthoma, among them those in glabrous skin, e.g., “the solitary,” the eruptive, and the so-called giant, that subungual, and that on mucous membranes. Squamous-cell car…