long is it before the result of the test is known?
- Your doctor can tell you right away if there were any polyps
or suspicious tissue in your colon. If biopsies are taken, it
usually takes a few days until a laboratory examines them and
gives your doctor a report. If your doctor finds polyps or cancer
in your colon, you will probably need to have a similar but more
comprehensive procedure called a colonoscopy done on another
day. This is because polyps can be removed only during a colonoscopy.
Moreover, discovery of polyps in the lower portion of the colon
during sigmoidoscopy means there is a greater likelihood that
polyps or cancer may exist in the rest of the colon - and this
can be determined only with a colonoscopy.