title: Lack of CD34 positive stromal cells within angiomyomas (vascular leiomyomas).
abstract: OBJECTIVE
  To investigate the role of CD34 positive stromal cells in the morphogenesis and tumour growth regulation of angiomyomas (vascular leiomyomas).
  
  
  METHODS
  Histochemical analysis using monoclonal antibodies to CD34 and CD31 was performed in 10 angiomyomas and their adjacent soft tissue.
  
  
  RESULTS
  CD34 positive stromal cells were not seen within the tumour tissue; the thick walled vessels within the tumours lacked CD34 positive stromal cells. In contrast, bundles of CD34 positive stromal cells were detected at the tumour border of all of the angiomyomas and in the adventitial tissue of the surrounding normal vessels.
  
  
  CONCLUSIONS
  The lack of CD34 positive stromal cells within an angiomyoma is associated with the characteristic morphology of an angiomyoma.
authors: First Department of Pathology, Kochi Medical School, Kochi, 783-8505 Japan. nakayamh@kochi-ms.ac.jp
authors: H
authors: H
authors: Nakayama
authors: H
authors: H
authors: Enzan
authors: E
authors: E
authors: Miyazaki
authors: N
authors: N
authors: Kuroda
authors: M
authors: M
authors: Toi
mesh_terms: D018229:Angiomyoma / Q000378:metabolism / Q000473:pathology*; D018952:Antigens, CD34 / Q000378:metabolism*; D006801:Humans; D012878:Skin Neoplasms / Q000378:metabolism / Q000473:pathology*; D017154:Stromal Cells / Q000378:metabolism / Q000473:pathology*
chemical_list: D018952:Antigens, CD34