THE MERCK MANUAL: The Merck Manual of Diagnosis and Therapymultimedia

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  • Gastroesophageal Reflux Disease (GERD)
  • Barrett Esophagus

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    Barrett Esophagus

    Barrett esophagus is replacement of normal squamous epithelium of the distal esophagus with metaplastic columnar epithelium during the healing phase of acute esophagitis. In this image, red-appearing bands of metaplastic epithelium can be seen extending proximally.

    Image provided by David M. Martin, MD.