Gastroesophageal reflux and Barrett's esophagus.

The role of endoscopic ultrasonography in the assessment of patients with reflux esophagitis and Barrett's esophagus is the subject of intense evaluation. Many tests have been proposed for the evaluation of patients with acid-reflux disorders. However, in the current era of cost containment, it is reasonable to perform only those tests necessary to provide the information required for optimal patient management. Although the role of EUS in evaluating patients with Barrett's esophagus appears promising, its clinical use remains largely unproven.