Multicenter Study on Postoperative Urinary and Sexual Function During Laparoscopic Functional Total Mesorectum Excision

This study looks at how a specific type of minimally invasive rectal cancer surgery (laparoscopic total mesorectum excision) affects bladder and sexual function in men. The goal is to understand whether this surgical technique better preserves nerve function compared to older approaches. **You may be eligible if...** - You are a male between 18 and 70 years old - You have been diagnosed with rectal cancer located 6–12 cm from the anal opening - Your cancer has not spread to distant organs (stage cT1-3a, N0, M0) - Your bladder, erection, and ejaculation function are currently normal **You may NOT be eligible if...** - You have had prior major abdominal or pelvic surgery - You need emergency surgery due to cancer complications - Your cancer has spread to the pelvis or other organs - You have received radiation therapy before surgery Talk to your doctor to see if this trial is right for you.