Newer Methods for Localization of Obscure Small-Bowel Bleeding

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Abstract
A bleeding site in the small intestine is sometimes difficult to detect by conventional x-ray diagnostic techniques. Radioactive-tagged red blood cells will appear in the blood and can be obtained from the region of the bleeding site by segmental tubal aspiration. A standardized procedure will yield useful information preoperatively, provided that active bleeding takes place during the period of aspiration. The case history of a woman, aged 60, who had suffered for 9 years with a severe anemia of undetermined origin, illustrates the principles involved.

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