title: Visualization of collateral venous circulation during intravenous urography secondary to superior vena cava syndrome.
abstract: Transient visualization of superficial collateral abdominal veins can occur in intravenous urography in some patients with the superior vena cava syndrome. The findings are characteristic enough to lead the radiologist to the correct diagnosis. A presentation and explanation of this finding is made.
mesh_terms: D000009:Abdominal Muscles / Q000098:blood supply*; D000368:Aged; D003097:Collateral Circulation; D006801:Humans; D007275:Injections, Intravenous; D008297:Male; D008479:Mediastinal Neoplasms / Q000150:complications; D013577:Syndrome; D014567:Urography / Q000379:methods*; D014652:Vascular Diseases / Q000175:diagnosis / Q000209:etiology; D014683:Vena Cava, Superior