title: Recent advances and controversies concerning adnexal neoplasms.
abstract: This article reviews the diagnostic clinical and histologic features of a group of adnexal tumors, including papillary eccrine adenoma, adenoid cystic carcinoma, Merkel's cell carcinoma, aggressive digital papillary adenoma (and adenocarcinoma), Bowen's disease, intraepidermal epithelioma, microcystic adnexal carcinoma and related tumors, and subcutaneous trichoepithelioma. These are adnexal tumors either often not recognized, because of their rarity, or the origin, biologic potential, and classification of which have been controversial.
authors.affiliation: Division of Retrovirology, Walter Reed Army Institute of Research, Washington, DC.
authors.forename: K J
authors.initials: KJ
authors.lastname: Smith
authors.forename: H G
authors.initials: HG
authors.lastname: Skelton
authors.forename: T T
authors.initials: TT
authors.lastname: Holland
mesh_terms: D000231:Adenocarcinoma, Papillary / Q000473:pathology; D001913:Bowen's Disease / Q000473:pathology; D003528:Carcinoma, Adenoid Cystic / Q000473:pathology; D015266:Carcinoma, Merkel Cell / Q000473:pathology; D004439:Eccrine Glands; D006801:Humans; D012867:Skin / Q000473:pathology; D012871:Skin Diseases / Q000473:pathology*; D012878:Skin Neoplasms / Q000473:pathology*; D013544:Sweat Gland Neoplasms / Q000473:pathology