title: Antral mucosa heterotopy in the duodenal bulb.
abstract: A case of heterotopic antral mucosa presenting as a typical gastric fold, located in the duodenal bulb, is described. Heterotopic gastric mucosa consisting mainly of fundic-type epithelium is commonly found in the gastrointestinal tract and predominantly in the cervical esophagus and the duodenal bulb. Heterotopic gastric mucosa composed of antral-type epithelium, especially of the size described here, is an extremely rare condition. A knowledge of these lesions is clinically relevant in the differential diagnosis at endoscopy of the upper tract.
mesh_terms: D000368:Aged; D002828:Choristoma / Q000473:pathology*; D004379:Duodenal Neoplasms / Q000473:pathology*; D004938:Esophageal Neoplasms / Q000473:pathology; D005753:Gastric Mucosa; D006801:Humans; D008297:Male; D009378:Neoplasms, Multiple Primary / Q000473:pathology; D011706:Pyloric Antrum