原发性腹膜后肉瘤临床少见，组织来源众多，早期诊断不易，术前难以准确地判断肿瘤的位置和性质，手术切除较困难，预后不满意。我科自１９８２～１９９６年共收治原发性腹膜后肉瘤１８例，现分析如下。１临床资料１．１一般资料：男性１１例，女性７例；年龄２２～７０岁... Primary retroperitoneal sarcoma is rarely seen in clinical practice and has many tissue sources. Early diagnosis is not easy. It is difficult to accurately determine the location and nature of the tumor before surgery. Surgical resection is difficult and the prognosis is not satisfactory. Our department has treated 18 cases of primary retroperitoneal sarcoma from 1982 to 1996. The analysis is as follows. 1 Clinical data 1.1 General information: 11 males and 7 females; aged 22 to 70 years old...