Typical findings of a positive gastrointestinal bleeding scan

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What are the typical findings of a positive gastrointestinal bleeding scan?

A positive GI bleeding scan generally requires that there be a focus of growing radiotracer activity that moves through the bowel. A focus that only increases in radiotracer activity can sometimes be a false-positive finding and attributable to renal activity, bowel hyperemia, or a vascular structure. It is also important to observe the initial site in which the focus occurs because the primary importance of this study is to determine localization of the site of bleeding 

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