OBJECTIVE: To raise the level of early diagnosis of @entity421 ( @entity421 ). METHODS: Ten @entity1 with @entity421 were treated from July 1991 to December 1998. The @entity1 included @entity1 6 and 4 @entity1 , aged from 4 to 44 years (average 23.7 years). The lesions were located at the proximal femur (1 @entity1 ), 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 @entity421 by open biopsy(negative by needle biopsy); the rest were found negative (2 @entity1 ), @entity3 (1), and @entity242 (5) by needle biopsy. Eight @entity1 received preoperative chemotherapy. Operations including limb-salvage (3) and amputation (7) were performed in all @entity1 . All @entity1 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 @entity1 and @entity358 in, 6, of whom 5 died and 1 is still alive with lung @entity3 . CONCLUSION: @entity421 is often misdiagnosed and needs early diagnosis and correct treatment under the cooperation of clinicians, radiologists and pathologists.

[ XXXX : report of 10 cases].

@entity1 :: ('9606', 'Species') :: ['women', 'patients', 'patient', 'men'] @entity242 :: ('MESH:D012509', 'Disease') :: ['sarcoma'] @entity421 :: ('MESH:D012516', 'Disease') :: ['telangiectatic osteosarcoma', 'TOS'] @entity358 :: ('MESH:D008171', 'Disease') :: ['pulmonary metastasis'] @entity3 :: ('MESH:D009362', 'Disease') :: ['metastasis']
@entity421 :: (MESH:D012516,Disease) :: ['Telangiectatic osteosarcoma']
