左锁骨内侧干骺端骨软骨瘤─例报告杜西军，李超，沈跃槐骨软骨瘤多见于青少年，好发于四肢长管骨干骺端。作者复习了１９８１～１９９１年国内骨科资料，锁骨处病变尚未见报道，我院１９９０年收治１例，随访３年无复发。患者女，２０岁。左胸锁关节处无痛渐大性包块１年... Osteochondroma of the medial metaphysis of the left clavicle--case report Du Xijun, Li Chao, Shen Yue The osteochondroma is more common in adolescents and occurs in the long bones of the extremities. The author reviewed the data of orthopaedics in China from 1981 to 1991. The lesions at the clavicular area have not been reported yet. In our hospital, one case was admitted in 1990 and no recurrence was found in the follow-up period of 3 years. The patient is 20 years old. The left chest lock joint painless progressive mass for 1 year...