大腸癌與身體它處癌症最大的不同點是通常由良性的大腸瘜肉惡化形成的。大腸癌是最容易發現且最易預防的癌症，通常大腸瘜肉從形成到惡化成癌的時間約3至5年的時間。惡性大腸瘜肉症如置之不理的話，百分百會變成大腸癌，而改變成大腸癌的年齡相當年輕。所以任何年齡的人若有便血、大便習慣改變或糞便潛血檢查呈現陽性反應時，都應該儘早找有經驗的專科醫師進行大腸鏡檢查， 已達到早期發現早期治療。 什麼是「瘜肉」? 所謂瘜肉是指粘膜的表面形成的凸出物，以大腸最為好發並且多發的部位。大腸瘜肉以男性居多。大腸瘜肉以組織學來分大致分為惡性瘜肉和良性瘜肉，大腸瘜肉主要有血便、大便次數增加。以往有瘜肉的病史，瘜肉症狀或是大腸癌家族史的患者，皆屬於高危險群，若加上有便血、大便次數異常、糞便潛血檢查呈現陽性變化，都應儘早接受大腸內視鏡檢查。 The biggest difference between colorectal cancer and cancers elsewhere in the body is that it is usually formed by the deterioration of benign colorectal polyps. Colorectal cancer is the easiest to detect and prevent cancer. Usually, it takes about 3 to 5 years for colorectal polyps to develop into cancer. If malignant colorectal polyps is ignored, 100% will turn into colorectal cancer, and the age of turning into colorectal cancer is quite young. Therefore, if a person of any age has blood in the stool, changes in stool habits, or a positive test for fecal occult blood, they should seek an experienced specialist for colonoscopy as soon as possible to achieve early detection and early treatment. What is “poor meat”? The so-called polyps refers to the protrusions formed on the surface of the mucous membrane, the most common and frequent part of the large intestine. Large intestine is mostly male. Colorectal polyps can be roughly divided into malignant polyps and benign polyps based on histology. Colorectal polyps mainly include bloody stools and increased stool frequency. Patients with a history of polyps, symptoms of polyps, or a family history of colorectal cancer belong to the high-risk group. If there are blood in the stool, abnormal stool frequency, and positive changes in stool occult blood, they should receive colorectal endoscopy as soon as possible Inspection of.