title: Unusual acquired hyperkeratosis: a case report.
abstract: The authors describe an acquired hyperkeratosis occurring in a 74-year-old male. To the authors' knowledge this disease shows a pathological picture never before described in the literature, consisting of the presence of a large number of acrosyringum-like structures not connected with the dermal sweat ducts in hyperkeratotic skin.
mesh_terms: D000052:Acanthosis Nigricans / Q000150:complications / Q000473:pathology; D000368:Aged; D004817:Epidermis / Q000473:pathology; D006801:Humans; D007642:Keratosis / Q000150:complications / Q000175:diagnosis* / Q000473:pathology; D008175:Lung Neoplasms / Q000150:complications; D008297:Male