Search Results for: keratoacanthoma

Differential Diagnosis in Dermatopathology


…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…

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 ridges not…

Differential Diagnosis in Dermatopathology


Keratoacanthomatous verruca vulgaris Verrucous keratoacanthoma

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 19…

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

Dermoscopic clues to diagnose acantholytic dyskeratosis

…ferentiation of these benign lesions from malignancy, such as keratoacanthoma or invasive squamous cell carcinoma that may also occur as a complication of BRAF inhibitor therapy. Typically, these papules display a central star-like pattern of brown s…

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…