Abstract
A case of adenocarcinoma of the upper third of the esophagus, arising from ectopic mucosa of gastric type, is described. The possible origins, from ectopic islets of gastric mucosa, tracheobronchial rests or esophageal glands, are discussed. The precence of ectopic gastric mucosa on the surface of the esophagus adjacent to the tumor suggests that this esophageal adenocarcinoma arose from ectopic gastric mucosa.
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