No, the flexible
sigmoidoscopy is not the most comprehensive test for colon cancer, as it only looks at one-third of the colon.
If the symptoms continue, I would pursue a
colonoscopy. This is the most comprehensive test, and can go further than the flexible sigmoidoscopy to look for potential masses.
If the tumor progresses, you likely would have other symptoms, such as fatigue caused by iron deficiency anemia.
The colonoscopy is the next logical step at this point.
This answer is not intended as and does not substitute for medical advice - the information presented is for patient education only. Please see your personal physician for further evaluation of your individual case.
Kevin Pho, M.D.
www.kevinmd.com
www.twitter.com/kevinmd