The difference between rectal diagnosis and colonoscopy is mainly reflected in the examination site, preparation, examination tools, and the time required for the examination.
1. Examination site: Rectal diagnosis can be examined up to a distance of 7 or 8 centimeters from the anus; colonoscopy can examine the anal canal, rectum and the whole colon.
2. Preparation: Rectal diagnosis suggests that patients should defecate their bowels; colonoscopy will ask the examinee to take medication before the examination to clean the intestines, and fast for 6~8 hours before the examination.
3. Examination tools: Rectal diagnosis is a doctor’s finger in the anorectal touch; enteroscopy is a doctor with the help of a thin, bendable fiber hose inspection, and can collect photos of the intestinal tract, take material.
4. The time needed for examination: rectal diagnosis takes about 3 minutes; enteroscopy usually takes 15-20 minutes.
If there is any discomfort, please consult the doctor in time to improve the examination and carry out standardized treatment under the doctor’s guidance.