Flexible sigmoidoscopy is a procedure that enables your physician to examine the lining of the rectum and a portion of the colon (large bowel). This is done by inserting a flexible tube, that is about the thickness of your finger, into the anus and advancing it slowly into the rectum and lower part of the colon.
What to Expect
An endoscopic ultrasound is a way for doctors to examine your gastrointestinal tract. Most doctors will administer a sedative to help you relax. It is likely that you will be asked to lay on your left side. After the sedatives have taken effect, the endoscopist passes the ultrasound endoscope through either your mouth or anus.While most patients fall asleep during the procedure, a few consider it mildly uncomfortable. A lot of patients do not even remember it at all. The test should only last about an hour. The small ultrasound device produces sound waves that will create an image of the tissue in the GI tract. Once the images have been created, the endoscope is gradually removed.