title: Pleomorphic lipoma of the dermis.
abstract: A case of pleomorphic lipoma is described. The neoplastic tissue developed exclusively within the dermis and characteristically involved the fibrous root sheaths of hair follicles, where several layers of lamellar collagen encircled the follicles and entrapped atypical spindle and multinucleated cells. A possible origin of this tumour in the adventitial dermis is postulated.
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006197:Hair / Q000473:pathology; D006801:Humans; D008067:Lipoma / Q000473:pathology*; D012878:Skin Neoplasms / Q000473:pathology*