Angiodysplasia is the most common vascular lesion of the gastrointestinal tract, and this condition may be asymptomatic, or it may cause gastrointestinal (GI) bleeding. The vessel walls are thin, with little or no smooth muscle, and the vessels are ectatic and thin. Colonic angiodysplasia occurs in approximately 1% of the adult population and is one of the most common causes of massive lower GI bleeding in patients over the age of 65. The lesions seen here are typical cecal angiodysplasia. While angiodysplasia can be found anywhere along the colon, significant bleeding occurs most frequently from those lesions located in the cecum.
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