In this small trial, patients with acute GI bleeding without a source despite upper and lower endoscopy were randomized to capsule endoscopy or angiography; the diagnostic yield was 53% for capsule endoscopy and 20% for angiography, and there was no difference in long term outcomes between the groups. Capsule endoscopy is a non-invasive option to diagnose acute GI bleeding when endoscopy is unrevealing (abstract)
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