title: Porokeratotic eccrine ostial and dermal duct nevus. Report of a case of adult onset.
abstract: We describe the case of a 38-year-old woman with adult-onset porokeratotic eccrine ostial and dermal duct nevus. The patient had a 9-year history of multiple keratotic papules and comedo-like pits on the medial border of the left foot. Light- and electron microscopic studies showed multiple cornoid lamella-like parakeratotic columns, which invariably were associated with hyperplastic eccrine ostia and distal sweat ducts. It is concluded that this entity, the first reported case of adult-onset porokeratotic eccrine ostial and dermal duct nevus, is a variant of the congenital form described previously by Abell and Read and by Aloi and Pippione.
authors.affiliation: Department of Dermatology, Free University Hospital, Amsterdam, The Netherlands.
authors.forename: T J
authors.initials: TJ
authors.lastname: Stoof
authors.forename: T M
authors.initials: TM
authors.lastname: Starink
authors.forename: C
authors.initials: C
authors.lastname: Nieboer
mesh_terms: D000328:Adult; D004439:Eccrine Glands / Q000648:ultrastructure; D005260:Female; D005534:Foot Diseases / Q000473:pathology; D006801:Humans; D007642:Keratosis / Q000473:pathology*; D009506:Nevus / Q000473:pathology* / Q000648:ultrastructure; D010241:Parakeratosis / Q000473:pathology*; D013544:Sweat Gland Neoplasms / Q000473:pathology* / Q000648:ultrastructure