Even if a patient had a previous clear colonoscopy or all polyps seen on that exam were removed, a new positive fecal occult blood test (FOBT) calls for a repeat colonoscopy.
After 21,600 clear colonoscopies done at the Veterans Administration Medical Center in Phoenix, 57 patients needed a second colonoscopy after they had a positive FOBT for blood in their stool. Of those one-third (19) had a newly discovered adenomatous polyp and 3 had colon or rectal cancer. One in four of the new adenomas were advanced. Read the rest of this entry »



