title: Subungual keratoacanthoma: a variant of verrucous squamous cell carcinoma of the skin.
abstract: A case of so-called subungual keratoacanthoma is reported. Clinically and morphologically, this lesion is similar to a verrucous carcinoma of the skin. It is possible that subungual keratoacanthoma and carcinoma cuniculatum (verrucous carcinoma) are different aspects of the same entity.
mesh_terms: D000368:Aged; D002294:Carcinoma, Squamous Cell / Q000175:diagnosis*; D003937:Diagnosis, Differential; D006801:Humans; D007636:Keratoacanthoma / Q000175:diagnosis* / Q000473:pathology; D008297:Male; D009262:Nails; D012871:Skin Diseases / Q000175:diagnosis / Q000473:pathology; D012878:Skin Neoplasms / Q000175:diagnosis*