Drane, W E Obstruction of the superior vena cava or its major tributaries demonstrated by bolus-injection excretory urography. [electronic resource] - Radiology Aug 1982 - 499-504 p. digital Publication Type: Case Reports; Journal Article ISSN: 0033-8419 Standard No.: 10.1148/radiology.144.3.7100459 doi Subjects--Topical Terms: AdultAgedCollateral CirculationFemaleHumansMaleRadionuclide ImagingSulfurTechnetiumTechnetium Tc 99m Sulfur ColloidThrombosis--diagnostic imagingUrographyVascular Diseases--diagnostic imagingVena Cava, Superior--diagnostic imaging