作者报导1例十二指肠Crohn氏病并发腺癌。该例有较长的肉芽肿样回肠炎的病史,两次回肠切除术及回肠升结肠吻合术史。4年后又经内窥镜检查,手术切除和病理证实并发腺癌。作者指出,十二指肠是上胃肠道Crohn氏病最易侵犯的肠段。超过80％的十二指肠Crohn氏病合并末端回肠或/ The authors report 1 case of duodenal Crohn’s disease complicated by adenocarcinoma. This case has a history of a longer granulomatous ileitis, a history of two ileal resections and an ileo-colonic colic anastomosis. After 4 years, it was examined by endoscopy. Surgical resection and pathology confirmed concurrent adenocarcinoma. The authors pointed out that the duodenum is the most invasive segment of the upper gastrointestinal Crohn’s disease. More than 80% of duodenal Crohn’s disease with terminal ileum or/