直肠癌的发生率在胃肠道肿瘤中仅次于胃癌。尽管外科技术的发展,直肠癌根治术后仍至少有一半患者死于局部复发和转移,以致单纯手术的治疗效果并无多大改观,因此,探明直肠癌根治术后复发、转移的规律和有关影响因素,是改进治疗方 The incidence of rectal cancer is second only to gastric cancer in gastrointestinal cancer. Despite the development of surgical techniques, at least half of patients with rectal cancer still die after local recurrence and metastasis after radical resection of the rectal cancer, so that the therapeutic effect of surgery alone has not changed much. Therefore, the rule of recurrence and metastasis after radical resection of rectal cancer has been investigated and related The influencing factor is to improve the treatment