结、直肠癌在日本也比较常见,且随饮食习惯的逐渐欧化,发生率也有增多之势。早期发现结肠、直肠癌的预后与病期有关,如Dukes A级的五年生存率在90%以上,甚至可达100%,C级则降至40%左右。但目前经治者中,属C级者仍占一半。为此,应尽早发现患者,争取在A或B级就得到彻底治疗,才能进一步提高治疗效果[1～4]。 Colorectal cancer and rectal cancer are also common in Japan, and with the gradual Europeanization of eating habits, the incidence rate has also increased. Early detection of the prognosis of colon and rectal cancer is related to the stage of disease. For example, the five-year survival rate of Dukes A is above 90%, and even up to 100%, while that of C is down to about 40%. However, among the current rulers, those who belong to the C level still account for half. To this end, patients should be discovered as soon as possible, and strive to get a thorough treatment at the A or B level in order to further improve the treatment effect [1 ~ 4].