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Angiodysplasia is the most common vascular lesion of the gastrointestinal tract, and this condition may be asymptomatic, or it may cause gastrointestinal (GI) bleeding.
Causes. Angiodysplasia of the colon is mostly related to the aging and degeneration of the blood vessels. It is more common in older adults. It is almost always seen on the right side of the colon.