Generally speaking, colonoscopy can be performed for those who suspect the disease of the large intestine or the end of the ileum without a clear diagnosis, if there is no contraindication to the examination.
With the continuous improvement of endoscope performance and the improvement of endoscopic operation technology, the indications of colonoscopy have become wider and wider, and more and more accepted by patients and even those who require physical examination.
Colonoscopy is intuitive and clear, and it can also perform biopsy of suspicious parts. If necessary, endoscopic treatment can be performed immediately. Its superiority is obvious and cannot be replaced by other inspection methods.
The main indications of colonoscopy are:
1. Blood in the stool cannot be determined as hemorrhoids or anal fissure bleeding, or blood in the stool caused by the large intestine cannot be excluded.
2. Repeated black stool or stool occult blood yang and upper gastrointestinal examination failed to find the disease.
3. Barium enema X-ray examination found that the large intestine is abnormal and needs further diagnosis.
4. Those who need endoscopic treatment, such as large intestine polyps.
5. Follow-up review after drug treatment such as inflammatory bowel disease.
6. Follow-up review after surgery or endoscopic treatment of cancer or polyps.
7. Those who have colorectal cancer or adenoma in the family who need a physical examination.
8. Health check. The consensus on colorectal cancer screening in the United States and the Asia-Pacific region is that people over the age of 50 should undergo a colonoscopy. However, in the western countries with bowel cancer in China, it is early. Therefore, colorectal cancer experts have suggested that people over the age of 40 should undergo a colonoscopy.