原发性肿瘤或肿瘤样病变何以不常见于锁骨,对此尚无明确解释,锁骨的特殊结构可能为其原因,但缺乏有力的证据。作者报告了58例发生于锁骨的病变,并将其分为恶性肿瘤、良性肿瘤及肿瘤样病变三组。其中恶性肿瘤30例:即原发性骨肉瘤4例、继发性放射后骨肉瘤3例,浆细胞瘤6例、软骨肉瘤5例、尤文氏肉瘤4例、恶性纤维组织细胞瘤3例(原发性1例、继发于放射后2例)、淋巴瘤3例、多中心性血管内皮瘤1例、粒细胞肉瘤1例;良性肿瘤5例:即骨软骨瘤2例、血管瘤2例、继发于Paget氏病的巨细胞瘤1例;肿瘤样病变23例:即动脉瘤样骨囊肿6例、嗜酸性肉芽肿5 Why is the primary tumor or tumor-like lesion not common in the clavicle? There is no clear explanation for this, and the special structure of the clavicle may be its cause, but there is no strong evidence. The authors reported 58 cases of clavicular lesions and classified them into malignant, benign, and tumor-like lesions. There were 30 cases of malignant tumors: 4 cases of primary osteosarcoma, 3 cases of secondary osteosarcoma after radiation, 6 cases of plasmacytoma, 5 cases of chondrosarcoma, 4 cases of Ewing’s sarcoma, and 3 cases of malignant fibrous histocytoma (3 cases). 1 case primary, 2 cases secondary to radiation, 3 cases of lymphoma, 1 case of multicentric hemangioendothelioma, 1 case of agranulosarcoma; 5 cases of benign tumor: 2 cases of osteochondroma, 2 hemangiomas One case of giant cell tumor secondary to Paget’s disease; 23 cases of tumor-like lesion: 6 cases of aneurysmal bone cyst, eosinophilic granuloma 5