进展期直肠癌需要广泛切除以防局部复发，但也带来了一定的泌尿生殖系功能不全发生率，因为在完整的切除术中盆腔自主神经系统，诸如骼内神经和盆腔神经丛将受损伤，日本外科医生自1984年开展了保留神经的广泛盆腔淋巴结清扫技术。日本Ch山a大学医学院外科于1984～1995年曾为17 Prostate cancer of the rectum needs extensive excision to prevent local recurrence but also brings about a certain incidence of genitourinary insufficiency because the pelvic autonomic nervous system such as the iliac and pelvic plexus will be damaged during a complete resection , Japanese surgeons carried out extensive pelvic lymphadenectomy to preserve the nerves since 1984. Japan Chushan University School of Medicine Surgery in 1984-1995 was 17