title: Heterologous mesenchymal proliferation of the skin.
abstract: BACKGROUND
  A benign cutaneous mesenchymal lesion with features of dermatofibroma, dermatomyofibroma, and lipoma is described.
  
  
  OBJECTIVE
  An attempt is made to classify this previously undescribed entity.
  
  
  METHODS
  Tissue sections were studied with routine hematoxylin and eosin and a battery of immunoreactants to ascertain the nature of the cells within the lesion.
  
  
  RESULTS
  The lesion described has a unique histologic appearance, containing elements of mature adipose tissue, smooth muscle, and fibrous tissue.
  
  
  CONCLUSIONS
  Our findings suggest that this tumor is a distinct entity that is not exactly like any previously described lesion and we have given it a descriptive name.
authors.affiliation: Department of Pathology, Children's Hospital, Boston, Massachusetts, USA.
authors.forename: R
authors.initials: R
authors.lastname: Marcus
authors.forename: B R
authors.initials: BR
authors.lastname: Smoller
mesh_terms: D000328:Adult; D002908:Chronic Disease; D005260:Female; D018219:Histiocytoma, Benign Fibrous / Q000473:pathology; D006801:Humans; D007889:Leiomyoma / Q000473:pathology; D008067:Lipoma / Q000473:pathology; D008637:Mesenchymoma / Q000473:pathology*; D012782:Shoulder; D012867:Skin / Q000473:pathology; D012878:Skin Neoplasms / Q000473:pathology*