title: Pseudophotopenic defect due to barium in the colon.
mesh_terms: D000328:Adult; D001466:Barium Sulfate; D003106:Colon / Q000000981:diagnostic imaging*; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008159:Lumbar Vertebrae / Q000000981:diagnostic imaging*; D010384:Pelvic Bones / Q000000981:diagnostic imaging; D011859:Radiography; D013122:Spinal Diseases / Q000000981:diagnostic imaging
chemical_list: D001466:Barium Sulfate