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结直肠癌(colorectal cancer,CRC)又称大肠癌,是消化道系统中常见的严重危害人类健康的一类恶性肿瘤疾病。在美国,大肠癌位于恶性肿瘤死因的第二位。2015年确诊的新发病例有132 700例,其中有49 700例死亡。据监测、流行病学及预后数据显示,CRC发病率趋向年轻化,在20~39岁这一年龄段患大肠癌(结肠癌和直肠癌)概率最高~([1])。我
Colorectal cancer (CRC), also known as colorectal cancer, is a type of malignant neoplasm commonly encountered in the digestive system and seriously endangering human health. Colorectal cancer is the second most common cause of cancer in the United States. 132,700 new cases were confirmed in 2015, of which 49,700 were fatal. According to surveillance, epidemiological and prognostic data show that the incidence of CRC tends to be younger, with the highest incidence of colorectal cancer (colon and rectal cancer) at the age of 20-39 years (1). I