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High Resolution Microendoscopy with Proflavine Hemisulfate in Diagnosing Squamous Cell Cancer of the Esophagus in Participants Undergoing Standard Chromoendoscopy

Trial Status: complete

This phase II trial studies how well high resolution microendoscopy with proflavine hemisulfate works in diagnosing squamous cell cancer of the esophagus in participants undergoing standard chromoendoscopy. Standard chromoendoscopy is a procedure which helps doctors look at the inside of the esophagus using Lugol's solution as a dye or stain for abnormal areas that might be disease. High resolution microendoscopy using proflavine hemisulfate as a dye is similar, but may provide better images. It is not yet known whether high resolution microendoscopy with proflavine hemisulfate is better in diagnosing participants with squamous cell cancer of the esophagus.