原发性十二指肠恶性肿瘤发病率低，国内报道较少，预后差。为了提高对本病的认识，提高早期诊断率，从而达到早期手术、改善预后的目的，我们总结１２例进行临床分析，现报告如下。１临床资料１２例原发性十二指肠恶性肿瘤，均经手术后病理证实，其中男性５例，女性７例，... The incidence of primary duodenal malignancies is low, domestic reports are few, and the prognosis is poor. In order to improve the understanding of the disease and improve the early diagnosis rate, so as to achieve the purpose of early surgery and improve the prognosis, we summarized 12 cases of clinical analysis, the report is as follows. 1 clinical data of 12 cases of primary duodenal malignant tumors, were confirmed by pathology after surgery, including 5 males and 7 females,...