title: [Evaluation of the roentgenological and endoscopic diagnosis in malignancies of the proximal digestive tract].
mesh_terms: D001466:Barium Sulfate; D005773:Gastroscopy / Q000592:standards*; D006801:Humans; D011859:Radiography; D013274:Stomach Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging
chemical_list: D001466:Barium Sulfate