title: Letter: Superior vena caval obstruction and increased radiocolloid activity on liver scintiphotos.
mesh_terms: D003102:Colloids / Q000378:metabolism*; D006801:Humans; D008099:Liver / Q000378:metabolism*; D011877:Radionuclide Imaging; D014683:Vena Cava, Superior; D014689:Venous Insufficiency / Q000175:diagnosis*
chemical_list: D003102:Colloids