The Role of Pelvic Peritonization in Laparoscopic or Robotic Low Anterior Resection

Evaluation of Pelvic Peritonization in Robotic or Laparoscopic Low Anterior Resection for Rectal Cancer

A randomized controlled clinical trial to compare the short and long outcomes of low anterior resection for middle-low rectal cancer with or without pelvic peritonization.

Inclusion Criteria:

• Matching the diagnostic criteria of rectal adenocarcinoma
• Laparoscopic or robotic radical surgery for rectal cancer
• Preoperative TNM staging T1-3N0-2M0
• No history of malignant tumors by preoperative examination
• Middle and low rectal cancer
• Tumor size of 4 cm or less
• ASA 1-3 scores
• Written informed consent by the patient
• The patient is willing to randomize to any group

Exclusion Criteria:

• Previous abdominal surgery
• Past malignant tumor history
• Preoperative examination suggests distant metastasis
• Be participating or have participated in other clinical studies related to rectal cancer surgery within 6 months
• Emergency operation

Elimination criteria

• The tumor is confirmed to be T4b during the operation or other tumors are found to be combined with other tumors during the operation
• The anastomosis is located above the peritoneum reflex
• Intraoperative conversion to laparotomy
• Change the surgical method to perform Miles or Hartmann surgery
• Postoperative pathologically confirmed non-adenocarcinoma
• The patient asked to withdraw