Colonoscopy is a test that allows your doctor to look at the inner lining of your large intestine (rectum and colon). If a sample of tissue (biopsy) was collected during the colonoscopy, it will be sent to a lab for tests.
- Samples of colon tissue are usually sent to a pathology lab, where they are looked at under a microscope for diseases.
- Other samples of colon tissue may be sent to a microbiology lab to see whether an infection is present.
Your doctor may be able to tell you the results immediately after the procedure. Other test results are ready in 2 to 4 days. Test results for certain infections may be ready in several weeks.
The lining of the colon looks smooth and pink, with a lot of normal folds. No growths, pouches, bleeding, or inflammation are present.
Some common abnormal findings of colonoscopy include Reference hemorrhoids Opens New Window (the most common cause of blood in the stool), Reference polyps Opens New Window Reference Opens New Window, Reference cancer Opens New Window Reference Opens New Window, one or more sores (Reference ulcers Opens New Window), pouches in the wall of the colon (Reference diverticulosis Opens New Window), or inflammation. A red, swollen lining of the colon (colitis) may be caused by infection or Reference inflammatory bowel disease (IBD) Opens New Window.
|By:||Reference Healthwise Staff||Last Revised: Reference December 7, 2011|
|Medical Review:||Reference Adam Husney, MD - Family Medicine
Reference Arvydas D. Vanagunas, MD - Gastroenterology