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1.左侧腹直肌切口,从耻骨上到脐的左侧,牵开腹直肌进入腹腔。2.于乙状结肠系膜根部的外侧沿Toidt白线切开后腹膜,并向下延伸至直肠膀胱窝或直肠子宫窝,然后向外侧牵拉乙状结肠。乙状结肠系膜根部及内侧的腹膜作纵形切开并向下延伸与以上切口相接。3.将直肠乙状结肠及其系膜从骶骨筋膜前凹游离向下直到尾骨尖的平面。在解剖过程中防止损伤左侧输尿管和输精管或卵巢动静脉。
1. Left rectus abdominis incision, from the suprapubic to the left umbilical, rectus abdominis into the abdominal cavity. 2. On the outside of the sigmoid mesangial root, cut the peritoneum along the Toidt white line and extend down to the rectum or rectum, then pull the sigmoid colon outwards. The sigmoid mesangial roots and the medial peritoneum cut longitudinally and extend downwardly to the incision. 3. The rectosigmoid colon and its mesangial sac of the anterior fossa free downward until the tip of the coccyx. Prevent damage to left ureter and vas deferens or ovarian arteries during dissection.