A Modified Fiberoptic Endoscopic Evaluation of Swallowing Evaluating Esophageal Dysphagia by a Capsule: A Pilot Study.

While functional endoscopic evaluation of swallowing (FEES) is the most useful diagnostic test for the evaluation of dysphagia, it cannot evaluate the esophageal phase of swallowing. To evaluate if a modification for the FEES exam by swallowing an empty capsule and screening of the upper esophagus could be used for early detection of esophageal dysphagia. A prospective, single-center, pilot study.