原发性十二指肠恶性肿瘤少见，由于缺乏特异性临床表现，加上十二指肠自身的解剖特点，早期诊断较困难，预后较差。现将本院自1980年1月至199o年9月经手术和病理证实的22例原发性十二指肠恶性肿瘤报告、分析如下。1；陆床资料1．l一般资料男19例，女3例。年龄29～7O岁，平均50 Primary duodenal malignancy is rare. Due to the lack of specific clinical manifestations and the anatomical features of the duodenum itself, early diagnosis is difficult and the prognosis is poor. The 22 cases of primary duodenal malignancies confirmed by surgery and pathology from January 1980 to September 199o in this hospital are reported and analyzed as follows. 1; Ground-bed data 1. l General information: 19 males and 3 females. Age 29 to 70 years old, average 50