Straight azygos continuation of the inferior vena cava. Apropos of 3 cases using an NMR study

Three patients with straight azygos vein continuation of inferior vena cava (IVC) were studied by nuclear magnetic resonance (NMR) imaging. In all three cases the diagnosis had been established previously by ultrasound and/or computed tomography imaging, but NMR images provided better anatomical pre...

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Bibliographic Details
Published inJournal de radiologie Vol. 68; no. 1; p. 45
Main Authors Coulomb, M, Rose-Pittet, L, Dalsoglio, S, Lebas, J F, Paillasson, F, Gros, C, Borot, C
Format Journal Article
LanguageFrench
Published France 01.01.1987
Subjects
Adult
Female
Humans
Magnetic Resonance Spectroscopy
Male
Middle Aged
Tomography, X-Ray Computed
Vena Cava, Inferior - abnormalities
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Summary:Three patients with straight azygos vein continuation of inferior vena cava (IVC) were studied by nuclear magnetic resonance (NMR) imaging. In all three cases the diagnosis had been established previously by ultrasound and/or computed tomography imaging, but NMR images provided better anatomical precision of the venous anomaly : visualization of the total trajectory of the major azygos vein, the caliber of which can exceed that of aorta, and absence of retrohepatic segment of IVC but presence of a short supradiaphragmatic segment towards which converge the suprahepatic veins; anastomotic etwork between IVC and major azygos vein contributing to ensure continuity of venous drainage superior to its renal segment. The advantages of NMR are described and the precise diagnostic role of this new method of imaging in the diagnosis of this type of anomaly discussed.
ISSN:0221-0363