It consists of carcinoma of pancreatic head in 9, carcinoma of Vater's ampulla in 18, carcinoma of Vater's papilla in 7, duodenal carcinoma in 2, duodenal sarcoma in 1, and other 4 cases with benign lesions. 其中,胰头癌9例,壶腹癌18例,乳头癌7例,十二指肠癌2例及肉瘤1例,属良性病变者4例。