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结直肠癌是常见的恶性肿瘤之一。目前全球结直肠癌的发病率和死亡率分别居于第3、4位。结直肠癌每年新发病例和死亡人数分别为123万和60万[1]。2013年报道美国结直肠癌患者5年总生存率约为60%,Ⅰ~Ⅱ期、Ⅲ期和Ⅳ期患者的5年生存率分别约为90%、70%和10%[2]。肿瘤分期越早预后越好。早期发现、早期诊断及早期治疗是降低结直肠癌患者死亡率的重要因素。我国目前并未建
Colorectal cancer is one of the common malignant tumors. Currently, the morbidity and mortality of colorectal cancer in the world are ranked No. 3 and No. 4, respectively. The number of new cases and deaths of colorectal cancer each year is 1.23 million and 600,000 respectively [1]. In 2013, the 5-year overall survival rate of patients with colorectal cancer in the United States was estimated to be 60%. The 5-year survival rates of patients with stage I-II, III, and IV were approximately 90%, 70%, and 10%, respectively [2]. The sooner the tumor stage the better the prognosis. Early detection, early diagnosis and early treatment of colorectal cancer patients to reduce mortality is an important factor. My country is not built yet