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Figure 4. 99mTc-RBC study showing a bleeding site in the colon. This 82 year old woman with a history of a recent sigmoid resection for carcinoma of the colon presented with three bouts of dark red bleeding into the colostomy bag. Sequential images displayed at 3 minutes/frame show active bleeding originating from the transverse colon near the splenic flexure (arrow) with activity moving in retrograde fashion into the transverse colon (arrowhead) and in antegrade direction into the colostomy bag (dual arrowhead). Surgery confirmed a bleeding diverticulum within the splenic flexure.

Figure 4. 99mTc-RBC study showing a bleeding site in the colon. This 82 year old woman with a history of a recent sigmoid resection for carcinoma of the colon presented with three bouts of dark red bleeding into the colostomy bag. Sequential images displayed at 3 minutes/frame show active bleeding originating from the transverse colon near the splenic flexure (arrow) with activity moving in retrograde fashion into the transverse colon (arrowhead) and in antegrade direction into the colostomy bag (dual arrowhead). Surgery confirmed a bleeding diverticulum within the splenic flexure.

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