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Updated: Jun 2, 2026

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Published on: December 28, 2021
Male sexual dysfunction after rectal cancer surgery
Yuji Nishizawa1, Masaaki Ito, Norio Saito
1Colorectal and Pelvic Surgery Division, Department of Surgical Oncology, National Cancer Center Hospital East, 6-5-1 Kashiwanoha, Kashiwa, Chiba, 277-8577, Japan.
Male sexual dysfunction is common after rectal cancer surgery, particularly following lateral lymph node dissection. Sildenafil showed promise in improving sexual function in a small group of patients.
Area of Science:
- Oncology
- Urology
- Sexual Medicine
Background:
- Rectal cancer treatment, including total mesorectal excision (TME), can significantly impact male sexual function.
- Postoperative sexual dysfunction is a recognized complication affecting quality of life for survivors.
Purpose of the Study:
- To quantify the incidence of male sexual dysfunction after TME for rectal cancer.
- To evaluate the efficacy of sildenafil in treating postoperative sexual dysfunction.
Main Methods:
- Prospective study involving patients undergoing curative TME for low rectal cancers.
- Sexual function assessed via questionnaires preoperatively and at 3 and 12 months postoperatively.
- Analysis of outcomes in sexually active patients, with a focus on risk factors like lateral lymph node dissection.
Main Results:
- High rates of erectile dysfunction (80% at 3 months, 76% at 12 months) and ejaculatory problems (82% at 3 months, 67% at 12 months) observed in sexually active patients.
- Lateral lymph node dissection identified as a significant risk factor for sexual dysfunction.
- Sildenafil improved sexual dysfunction in 69% of 16 treated patients.
Conclusions:
- Sexual dysfunction is a frequent and significant issue following rectal cancer surgery.
- Surgical technique, specifically lateral lymph node dissection, is a primary cause of sexual dysfunction.
- Sildenafil offers a potential therapeutic option for managing sexual dysfunction post-rectal cancer treatment.
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