1.   Eighty eight percent examinations reached the right colon.

2.   We elected to include this patient in the study since the entire remaining right colon had active ulcerative colitis.

3.   This resulted from slower regional transit through all three parts of the colon, although the difference was significant for the right colon only.

4.   The control group consisted of patients who had undergone similar surgery for carcinoma of the right colon.

5.   Eight patients with a history of ileocolonic resection for carcinoma of the right colon agreed to undergo blood flow studies during their planned surveillance colonoscopy.

6.   Eighty eight per cent of examinations reached the right colon.

7.   Eighty eight per cent examinations reached the right colon.

8.   DNA is extremely stable, whereas blood, especially from the right colon, may be degraded by bacteria and subsequently not detected by the guaiac method.