The change that defecate is used to often the symptom that colonic cancer appears the earliest, much performance is defecate number increase, diarrhoea, blood, pus is taken in secret, excrement and urine or mucous.

• 排便习惯的改变经常是结肠癌最早出现的症状，多表现为大便次数增多、腹泻、便秘、粪便中带血、脓或粘液。