title: Apocrine cystadenoma arising in a nevus sebaceus of Jadassohn.
abstract: An increased incidence of benign and malignant adnexal tumors has been noted to occur within the nevus sebaceus of Jadassohn. We report a case of a 41-year-old white woman with a blue cyst on her scalp which had recently developed within a congenital "birthmark." Excision of the lesion revealed that the nodule was an apocrine cystadenoma within a nevus sebaceus of Jadassohn. The clinical features of nevus sebaceus with apocrine cystadenoma are discussed and the various tumors which may arise within the nevus sebaceus are reviewed.
mesh_terms: D003537:Cystadenoma / Q000473:pathology*; D005260:Female; D006801:Humans; D008875:Middle Aged; D009378:Neoplasms, Multiple Primary / Q000473:pathology*; D009508:Nevus, Pigmented / Q000473:pathology*; D012535:Scalp / Q000473:pathology*; D012878:Skin Neoplasms / Q000473:pathology*