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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.
Angiodysplasia is more common in older adults, especially individuals older than 60-years. It almost exclusively occurs on the right side of the colon. The exact cause of angiodysplasia is unknown. It is the most common cause of recurrent lower intestinal bleeding in individuals with kidney failure. Signs and symptoms of angiodysplasia may include blood in the stool with no associated pain, fatigue, shortness of breath, and anemia. The blood vessels in AVMs are fragile and more apt to bleed. Angiodysplasia may be diagnosed via colonoscopy, or visual examination of the colon.