title: [Telangiectatic osteosarcoma: report of 10 cases].
abstract: OBJECTIVE
  To raise the level of early diagnosis of telangiectatic osteosarcoma (TOS).
  
  
  METHODS
  Ten patients with TOS were treated from July 1991 to December 1998. The patients included men 6 and 4 women, aged from 4 to 44 years (average 23.7 years). The lesions were located at the proximal femur (1 patient), distal femur metaphysis (2), femur shaft (1), proximal tibia metaphysis (2), distal tibia (1) and humerus shaft (3). Preoperative pathologic examination showed two cases of TOS by open biopsy(negative by needle biopsy); the rest were found negative (2 patients), metastasis (1), and sarcoma (5) by needle biopsy. Eight patients received preoperative chemotherapy. Operations including limb-salvage (3) and amputation (7) were performed in all patients. All patients accepted postoperative chemotherapy.
  
  
  RESULTS
  10 Follow-up for a mean of 28 months (range 6 - 72 months) showed no local recurrences: disease-free in 4 patients and pulmonary metastasis in, 6, of whom 5 died and 1 is still alive with lung metastasis.
  
  
  CONCLUSIONS
  TOS is often misdiagnosed and needs early diagnosis and correct treatment under the cooperation of clinicians, radiologists and pathologists.
authors.affiliation: Department of Orthopaedic Oncology, Beijing Jishuitan Hospital, Beijing 100035, China.
authors.forename: Q
authors.initials: Q
authors.lastname: Zhang
authors.forename: Y
authors.initials: Y
authors.lastname: Cai
authors.forename: X
authors.initials: X
authors.lastname: Niu
authors.forename: L
authors.initials: L
authors.lastname: Hao
authors.forename: Y
authors.initials: Y
authors.lastname: Ding
authors.forename: F
authors.initials: F
authors.lastname: Yu
mesh_terms: D000293:Adolescent; D000328:Adult; D001859:Bone Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000628:therapy; D002648:Child; D002675:Child, Preschool; D003131:Combined Modality Therapy; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D012516:Osteosarcoma / Q000175:diagnosis* / Q000473:pathology / Q000628:therapy