The goal of this clinical trial is to learn whether the extra-peritoneal tunneling (EPT) drain fixation method works better and more safely than the conventional drain insertion method after rectal cancer surgery. It will also learn about the safety and possible complications of the EPT technique. The main questions it aims to answer are: Does the EPT drain fixation method increase the success rate of conservative management (drain maintenance and/or antibiotics) when an anastomotic leak occurs? Does the EPT method reduce the rate of drain displacement compared with the conventional method? Are there any safety concerns or complications associated with the EPT method? Researchers will compare EPT drain fixation to the conventional drain method to see which approach provides better outcomes after anterior or low anterior resection for rectal cancer. Participants will: Undergo anterior or low anterior resection for rectal cancer as part of their standard surgical treatment. Be randomly assigned to either the EPT drain fixation group or the conventional drain group. Receive the same postoperative care as usual, including follow-up imaging to monitor drain position and recovery. Be observed for postoperative outcomes such as anastomotic leakage, drain position, and related complications until recovery. This study will help determine whether securing the drain through an extra-peritoneal tunnel can prevent drain movement, improve early management of leakage, and enhance patient recovery after rectal surgery.
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Rate of successful conservative management in patients who developed an anastomotic leak
Timeframe: Within 60 days after diagnosis of anastomotic leak