Use of a water enema to facilitate localization of gastrointestinal hemorrhage during Tc-99m labeled RBC scintigraphy.

The authors report the use of a tap water enema to displace, and thereby localize, a site of colonic bleeding that had remained fixed in the left lower quadrant of the abdomen and could not be accurately localized. In similar cases, this maneuver may help to localize colonic bleeds in a timely fashion, avoiding protracted imaging and obviating the need for additional diagnostic testing.