title: Observations on roentgen features of benign and malignant gastric ulcers.
mesh_terms: D002293:Adenocarcinoma, Scirrhous / Q000000981:diagnostic imaging*; D001466:Barium Sulfate; D002277:Carcinoma / Q000000981:diagnostic imaging; D003937:Diagnosis, Differential; D006801:Humans; D011859:Radiography; D013274:Stomach Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology; D013276:Stomach Ulcer / Q000000981:diagnostic imaging* / Q000473:pathology
chemical_list: D001466:Barium Sulfate