Related Experiment Video
Updated: Nov 1, 2025

Construction of a Wireless-Enabled Endoscopically Implantable Sensor for pH Monitoring with Zero-Bias Schottky Diode-based Receiver
Published on: August 27, 2021
Acid secretion from an esophageal inlet patch demonstrated by ambulatory pH monitoring
A R Galan1, D A Katzka, D O Castell
1Gastroenterology Division, Allegheny University Hospitals, Graduate Hospital, Philadelphia, Pennsylvania, USA.
Abstract:
Heterotopic gastric mucosa may occur throughout the gastrointestinal tract, including the upper esophagus. The capability of this ectopic mucosa to secrete acid has been suggested in different reports. We report for the first time a case of heterotopic gastric mucosa in the upper esophagus complicated by a stricture with secretion of acid demonstrated by prolonged ambulatory pH monitoring. Lansoprazole, 30 mg twice daily, produced symptom resolution, and repeat ambulatory pH showed complete acid suppression in the proximal esophagus.
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