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日本国立癌中心外科赤孝之等报道，从预后和男性性功能方面对直肠癌侧方清扫效果进行评估。结果：侵犯固有肌层（ｍｐ）以上的直肠癌根治切除５年生存率为，腹膜返折上（ Ｒａ）组 １１３例（ ８０％）；腹膜返折下（Ｒｂ）组４１７例（７４％）。侧方转移阳性率的Ｒａ组和 Ｒ
Japan National Cancer Center Surgical Chihiro and other reports from the prognosis and male sexual function side effects of rectal cancer to assess the effect. Results: The five-year survival rate of radical resection of rectal cancer was 113 cases (80%) in peritoneal recuperation (Ra) group and 417 cases (74%) in peritoneal reentirement (Rb) group, . Lateral metastasis positive rate of Ra group and R