title: Heterotopic gastric mucosa: presentation as a rugose duodenal mass.
mesh_terms: D000368:Aged; D001466:Barium Sulfate; D001706:Biopsy; D002828:Choristoma / Q000175:diagnosis*; D004379:Duodenal Neoplasms / Q000175:diagnosis*; D004386:Duodenum / Q000473:pathology; D004724:Endoscopy; D004733:Enema; D005753:Gastric Mucosa; D006801:Humans; D008297:Male; D013670:Sodium Pertechnetate Tc 99m; D013667:Technetium
chemical_list: D001466:Barium Sulfate; D013667:Technetium; D013670:Sodium Pertechnetate Tc 99m