锐性直肠系膜切除的细致盆腔手术联合全身化疗和外照射的综合治疗是 T3期淋巴结阳性直肠癌理想治疗方案的基础 ,最近多个中心将术中放疗加入局部晚期和复发直肠癌的治疗方案希望增强对肿瘤局部的控制。因此需要行外照射、术中放疗和化疗的局部晚期的原发和复发直肠癌组成了一组 Sharp pelvic mesocolon resection combined with pelvic surgery combined with systemic chemotherapy and external beam irradiation is the ideal treatment for T3 lymph node-positive rectal cancer based on the recent multi-center radiotherapy to join the local treatment of locally advanced and recurrent rectal cancer hope Enhance the local control of the tumor. Therefore, the need for external exposure, intraoperative radiotherapy and chemotherapy in locally advanced primary and recurrent rectal cancer form a group