title: An unusual hematopoietic proliferation seen in a nevus sebaceous.
abstract: Nevus sebaceous is a tumor of primary epithelial germ cells that is generally first noticed at birth. It is relatively quiescent until puberty when a variety of benign and potentially malignant tumors may arise within it. We describe a nevus sebaceous with immature fat cells, vascular ectasia, and extramedullary hematopoiesis that was present at birth. At 4 months, the immature adipose and hematopoietic elements, as well as the vascular changes, had resolved.
authors.affiliation: Department of Dermatology and Pathology, University of Iowa Hospitals and Clinics, Iowa City, Iowa, USA.
authors.forename: L R
authors.initials: LR
authors.lastname: Massa
authors.forename: M S
authors.initials: MS
authors.lastname: Stone
mesh_terms: D000273:Adipose Tissue / Q000166:cytology / Q000473:pathology; D006410:Hematopoiesis; D006801:Humans; D007231:Infant, Newborn; D009506:Nevus / Q000098:blood supply / Q000473:pathology*; D012535:Scalp / Q000473:pathology; D012626:Sebaceous Gland Neoplasms / Q000098:blood supply / Q000473:pathology*