title: Serendipitous diagnosis of superior vena caval obstruction on a posterior abdominal flow study.
mesh_terms: D001842:Bone and Bones / Q000000981:diagnostic imaging; D006801:Humans; D007668:Kidney / Q000000981:diagnostic imaging; D008297:Male; D008875:Middle Aged; D011877:Radionuclide Imaging; D013479:Superior Vena Cava Syndrome / Q000000981:diagnostic imaging*