近年来,结直肠癌的发病率呈不断上升之势。尽管在高发地区,结肠癌的发病率高于直肠癌,但从全国范围而言,直肠癌的发病率仍高于结肠癌。特别在我国直肠癌患者中,70%的肿瘤位于腹膜反折下,属低位直肠癌。因此,其治疗上的要求和难度远较结肠癌和上段直肠癌高。问题的关键是要解决 In recent years, the incidence of colorectal cancer is on the rise. Although the incidence of colon cancer in high incidence areas is higher than that in rectal cancer, the incidence of rectal cancer is still higher than that of colon cancer nationwide. Especially in our patients with rectal cancer, 70% of the tumors located in the peritoneal fold, is a low rectal cancer. Therefore, its treatment requirements and the difficulty is far higher than colon cancer and upper rectal cancer. The crux of the problem is to be solved