title: Discrepant opacification of the internal jugular veins: indicator of innominate vein occlusion on computed tomography of the neck.
abstract: Discrepant enhancement of an internal jugular vein on computed tomography during intravenous infusion of contrast material via an upper extremity vein constitutes an abnormal finding. We demonstrate that the greater degree of opacification of the internal jugular vein on the affected side is due to reversal of flow on that side and is indicative of occlusion of a major venous pathway proximally.
mesh_terms: D000368:Aged; D016121:Brachiocephalic Veins / Q000000981:diagnostic imaging*; D006801:Humans; D007601:Jugular Veins / Q000000981:diagnostic imaging*; D008297:Male; D008479:Mediastinal Neoplasms / Q000150:complications; D009333:Neck / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed; D014652:Vascular Diseases / Q000000981:diagnostic imaging