1. Angiodysplasia of the colon  (Trust Mark: Doctor-Reviewed)
Angiodysplasia of the colon is enlarged and fragile blood vessels in the colon that result in occasional loss of blood from the gastrointestinal (GI) tract.• Reviewer: David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine; George F Longstreth, MD, Department of Gastroenterology, Kaiser Permanente Medical Care Program San Diego, California. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.