Abstract
CASE REPORT A 60-year-old man came to his physician with fatigue, weakness, and dyspnea on exertion. He had a 3-year history of chronic gastrointestinal bleeding and a hematocrit of 17% at the time of initial evaluation. He received 4 units of packed red blood cells, and his hematocrit increased to 32%. Esophagogastroduodenoscopy and colonoscopy were unrevealing. On referral to our clinic, the patient’s hematocrit had fallen 7% despite oral iron therapy. Physical examination was unremarkable. Enteroclysis demonstrated a 6-cm tubular filling defect in
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