title: Gastric heterotopia of the proximal esophagus: a report of four cases detected by endoscopy and review of literature.
mesh_terms: D000328:Adult; D000368:Aged; D001471:Barrett Esophagus / Q000473:pathology; D002471:Cell Transformation, Neoplastic; D002828:Choristoma / Q000150:complications / Q000473:pathology*; D003937:Diagnosis, Differential; D004724:Endoscopy; D004947:Esophagus; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D013274:Stomach Neoplasms / Q000150:complications / Q000473:pathology*