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Case Presentation. SN is a 74 year old male with coronary artery disease, and chronically anticoagulated with coumadin for a artifical aortic valve, who presented 6 months prior to admission with melena and a hematocrit of 22%. Upper endoscopy and colonoscopy were normal at that time. He was transfused, started on iron therapy and discharged home.He was readmitted 2 months later with similar symptoms and a hematocrit of 18%. Repeat EGD and colonoscopy were again normal. An enteroscopy was perf1142
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