There are more small lesions. CONDITIONS WITH INCREASED PREVALENCE — The prevalence of angiodysplasias is increased in older populations, those with gastrointestinal bleeding, and those with certain predisposing conditions such as end-stage renal disease. End-stage renal disease — Angiodysplasia is the second most common cause of gastrointestinal bleeding in elderly patients with end-stage renal disease. These lesions account for about 20 and 30 percent of upper and lower gastrointestinal bleeds, respectively, and approximately one-half of recurrent upper gastrointestinal bleeds. They can occur anywhere along the gastrointestinal tract and are usually multiple.
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