Colonoscopy is currently the most important method and gold standard for early detection of colorectal benign and malignant tumors and precancerous lesions. It can observe whether there are lesions in the entire colorectum and the terminal ileum. It can also clamp the lesion tissue for pathological examination. It helps to make a clear diagnosis and judge the severity of the condition, so as to diagnose and treat. With the high incidence of intestinal diseases in recent years, it is generally recommended that people over 40 years old, regardless of discomfort and symptoms, should undergo a comprehensive colonoscopy. In addition, those who have the following conditions also need a colonoscopy:
1. Patients with symptoms such as blood in the stool and melena, or a long-term fecal occult blood test is positive.
2. Those with mucus, pus and blood in stool.
3. People with frequent bowel movements, unformed or diarrhea. Those who have had difficulty defecation or have irregular bowel movements recently.
4. Stool becomes thin and deformed.
5. People with long-term abdominal pain and bloating.
6. Unexplained weight loss or weight loss.
7. People with unexplained anemia.
8. Abdominal masses of unknown cause need to be clearly diagnosed.
9. Unexplained elevated CEA.
10. Long-term chronic constipation, who cannot be cured for a long time.
11. Chronic colitis, long-term medication, long-term cure.
12. Suspected colon tumor, but negative barium enema X-ray examination.
13. CT or other examinations of the abdomen found that the bowel wall is thickened, and colorectal cancer needs to be excluded.
14. Lower gastrointestinal bleeding, bleeding lesions can be found, the cause of bleeding can be determined, and if necessary, hemostasis can be treated under microscope.
15. Patients who have ever suffered from schistosomiasis, ulcerative colitis and other diseases.
16. Colonoscopy needs to be reviewed regularly after colorectal cancer surgery. Patients after colorectal cancer surgery generally require a colonoscopy every 6 months to a year. If the colonoscopy fails to examine all the colon due to colonic obstruction before the operation, colonoscopy should be performed 3 months after the operation to determine whether there are colon polyps or colon cancer in other parts.
17. Those who have been found to have colon polyps and need to be removed under a colonoscope.
18. Colonoscopy needs to be reviewed regularly after colorectal polyps. Colorectal polyps may recur after surgery and should be reviewed regularly. Villiform adenomas, serrated adenomas, and high-grade intraepithelial neoplasia polyps are prone to recurrence and cancer. It is recommended to review colonoscopy every 3-6 months. For other polyps, it is recommended to check the colonoscopy every 6-12 months. If the result of the check is negative, you can check again after 3 years.
19. People with a family history of colorectal cancer should undergo colonoscopy. For patients with colorectal cancer, their immediate family members should have a physical examination and colonoscopy even if they do not have any symptoms or discomfort.
20. People with a family history of colorectal polyps also need to undergo colonoscopy.
21. Patients with repeated hemorrhoid bleeding who have not recently undergone colonoscopy should also undergo an examination to exclude colorectal tumors.