作者分析影响直肠癌伴侧方淋巴结转移患者的预后因素 ,收集日本国立预防医学院于 1987～ 1996年54 5例进展期直肠癌的资料 ,其中 2 5 0例曾行系统性侧方解剖清扫 ,5 3例 (2 1.2 % )有侧方淋巴结转移 ,计男 33例 ,女 2 0例 ,平均年龄 5 6 .5岁 (2 5～ 85岁 ) ,肿瘤下缘在腹膜上 The authors analyzed prognostic factors affecting patients with rectal cancer with lateral lymph node metastases and collected data on 545 advanced colorectal cancers from the National Preventive Medicine Institute of Japan from 1987 to 1996. Twenty-five patients underwent systematic lateral dissection, Fifty-three patients (2.12%) had lateral lymph node metastases, including 33 males and 20 females, with a mean age of 56.5 years (range 2 5 to 85 years). The lower edge of the tumor was on the peritoneum