原发性十二指肠水平部间质瘤行局部肠段切除术2例，中高分化腺癌行胰十二指肠切除术1例。
For inferior part of the duodenum , 2 cases of leiomyoma were given the local segmental resection of the duodenum , and 1 case of moderately-differentiated carcinoma underwent pancreatoduodenectomy .
十二指肠水平部