title: Ectopic gastric mucosa--rare but not forgotten.
mesh_terms: D000368:Aged; D002828:Choristoma / Q000175:diagnosis*; D003937:Diagnosis, Differential; D004379:Duodenal Neoplasms / Q000175:diagnosis*; D005260:Female; D005753:Gastric Mucosa; D006801:Humans; D007417:Intestinal Polyps / Q000175:diagnosis; D008297:Male; D008875:Middle Aged