结直肠癌为常见恶性肿瘤,其发病率近些年来有明显上升趋势,在美国居恶性肿瘤的第二位,仅次于肺癌。我国属8大常见肿瘤之一,居4、5、6位。说明结直肠癌是严重危害人类的一种疾病。关于结直肠癌的治疗,当前仍以手术为主要治疗手段。近年来在治疗效果上有了明显的提高,术后生存质量也有了改善,但 Colorectal cancer is a common malignancy, and its incidence has increased significantly in recent years. It ranks second in the United States in terms of malignancy, second only to lung cancer. China is one of 8 common tumors, ranking 4, 5, and 6. Explain that colorectal cancer is a disease that seriously harms humans. On the treatment of colorectal cancer, surgery is still the main treatment. In recent years, there has been a significant improvement in the therapeutic effect, and the quality of life after surgery has also improved, but