Fig. 1. Lower gastrointestinal bleeding in a 68-year-old female in whom the findings from initial colonoscopy had been unrevealing. (A) Tagged red blood cell image shows abnormal accumulation of radiotracer within right lower abdomen (arrow). (B) Single-photon emission computed tomography/computed tomography (SPECT/CT) image shows migration and accumulation of radiotracer along the ileum in right lower abdomen (arrow). (C) Coronal arterial phase CT image show nodular extravasation of contrast material in the distal ileum (arrow). (D) Selective catheter angiography of a distal ileal branch shows intermittent contrast extravasation into the lumen of the ileum, which was subsequently treated with gelfoam embolization (arrow).
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