我们在行一直肠癌低位前切除时 ,不慎将近端肠袢顺时针旋转 3 60°,与远端吻合 ,虽经处理未留下不良后果 ,但教训深刻 ,现报告如下 :1　临床资料　　患者女性 ,62岁 ,因低位直肠癌行根治性低位前切除术 ,用强生SDH2 9胃肠吻合器行乙状结肠直肠低位吻合 ,吻合口距齿状线约 3cm。 We are in the line of colorectal cancer low resection, inadvertently proximal bowel 袢 clockwise rotation 360 degrees, and the distal anastomosis, although the treatment did not leave unpleasant consequences, but the lessons learned, are as follows: 1 clinical data A 62-year-old female patient underwent radical low-level anterior resection for low rectal cancer with a DSH2 9 gastrojejunostomy performed with a low sigmoid colorectal anastomosis approximately 3 cm anterior to the dentate line.