title: [Clinical and pathologic characteristics of primary angiosarcoma of breast].
abstract: OBJECTIVE
  To study the clinical and pathologic characteristics of primary angiosarcoma of breast.
  
  
  METHODS
  Five cases of primary angiosarcoma of breast were reviewed. Immunohistochemical study (SP method) for factor VIII-related antigen, CD31, CD34, estrogen receptor, progesterone receptor and c-erbB-2 was performed. The clinical data were also analyzed.
  
  
  RESULTS
  All of the 5 patients had a history of a painless breast lump. Ultrasound examination and mammogram did not reveal any specific findings. Histologically, various degree of cellular pleomorphism was noted. Immunohistochemical study showed a positive expression of endothelial associated antigens of the tumors cells in all the 5 cases. The staining result for estrogen receptor, progesterone receptor and c-erbB-2 was negative.
  
  
  CONCLUSIONS
  Primary angiosarcoma of breast is a rare entity. The diagnosis is rather difficult owing to the lack of specific clinical findings and histological heterogeneity. Application of Positive expression of endothelial associated antigens of the tumors cells is helpful in making a pathological diagnosis morphologically.
authors.affiliation: Department of Breast, Tianjin Medical University Cancer Hospital, Tianjin 300060, China.
authors.forename: Hong
authors.initials: H
authors.lastname: Liu
authors.forename: Jing
authors.initials: J
authors.lastname: Zhao
authors.forename: Yu
authors.initials: Y
authors.lastname: Fan
authors.forename: Xi-lin
authors.initials: XL
authors.lastname: Fu
authors.forename: Li
authors.initials: L
authors.lastname: Fu
mesh_terms: D000328:Adult; D018952:Antigens, CD34 / Q000378:metabolism; D001940:Breast / Q000378:metabolism / Q000473:pathology / Q000601:surgery; D001943:Breast Neoplasms / Q000378:metabolism / Q000473:pathology* / Q000601:surgery; D018567:Breast Neoplasms, Male / Q000378:metabolism / Q000473:pathology* / Q000601:surgery; D003937:Diagnosis, Differential; D005260:Female; D005500:Follow-Up Studies; D006394:Hemangiosarcoma / Q000378:metabolism / Q000473:pathology* / Q000601:surgery; D006801:Humans; D007150:Immunohistochemistry; D008297:Male; D008408:Mastectomy / Q000379:methods; D008875:Middle Aged; D019408:Platelet Endothelial Cell Adhesion Molecule-1 / Q000378:metabolism; D014841:von Willebrand Factor / Q000378:metabolism
chemical_list: D018952:Antigens, CD34; D019408:Platelet Endothelial Cell Adhesion Molecule-1; D014841:von Willebrand Factor