Where is the optimal plane to mobilize the anterior rectal wall in female patients undergoing total mesorectal excision?

Figure 2 The procedure of the control group. A: The peritoneum was cut 0.5-1 cm above the peritoneal reflection. The peritoneal reflection was slightly white, and its texture was different from the texture of other structures during the operation; B: The cutting plane was between the vaginal muscle layer and the adventitia. The vaginal adventitia was closely adherent to the muscle layer; C: Bleeding occurred after stripping the vaginal adventitia from the muscle, and hemostasis was performed. ADV: Adventitia of the vagina; FPR: Fascia propria of the rectum; MR: Mesorectum; MUS: Muscle; PR: Peritoneal reflection; R: Rectum; V: Vagina.