十二指肠恶性肿瘤包括腺癌、淋巴内瘤,平滑肌肉瘤及类癌,临床上甚为少见。Harmberger于1746年首次报导1例,到1974年的228年向文献报导697例,其发病率占胃肠道恶性肿瘤的0.3％,占小肠恶性肿瘤的25—45％。 我院自1980年7月到1986年3月共有6例,报告如下: Duodenal malignancies include adenocarcinoma, lymphoma, leiomyosarcoma, and carcinoid, which are rare clinically. Harmberger first reported 1 case in 1746. By 228 years in 1974, 697 cases were reported in the literature. Its incidence accounted for 0.3% of gastrointestinal cancers and 25-45% of malignant tumors of the small intestine. There were 6 cases in our hospital from July 1980 to March 1986. The report is as follows: