直肠癌外侧淋巴结清扫可损害盆腔自主神经，从而增加了泌尿道和男性性功能不良的发生率。作者曾介绍清洗法能检出小于4mm直径和传统手术不能发现的小转移性淋巴结，现采用清洗法检查转移淋巴结，观察外侧淋巴结清扫的优缺点。在1979～1988年198倒成人直肠癌病人曾行切除术，并? Colorectal lateral lymph node dissection can damage the pelvic autonomic nerves, thereby increasing the incidence of urinary tract and male sexual dysfunction. The authors have described that the cleaning method can detect small metastatic lymph nodes that are smaller than 4 mm in diameter and can not be found by traditional surgery. The cleaning lymph nodes are now examined by washing and the advantages and disadvantages of lateral lymph node dissection are observed. In 1979 to 1988, 198 adult rectal cancer patients had undergone resection.