title: The case of the triangular foreign body.
mesh_terms: D001729:Bismuth; D004947:Esophagus; D005260:Female; D005547:Foreign Bodies / Q000000981:diagnostic imaging*; D006801:Humans; D008875:Middle Aged; D011859:Radiography; D013607:Tablets
chemical_list: D013607:Tablets; D001729:Bismuth