Obstruction of the superior vena cava due to aortic dissection: CT findings of collateral venous flow via the bronchial veins

Obstruction of the superior vena cava caused by acute aortic dissection can lead to collateral flow in the azygos and hemiazygos system, as well as to reversal of flow in the pleurohilar and bronchial veins. In the latter case, a small right-to-left shunt has formed. We describe the findings in such...

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Veröffentlicht in:	European radiology 1996-01, Vol.6 (5), p.753-755
Hauptverfasser:	Schepers-Bok, R, Mallens, W M
Format:	Artikel
Sprache:	eng
Schlagworte:	Aged Aneurysm, Dissecting - complications Aneurysm, Dissecting - diagnostic imaging Aortic Aneurysm, Thoracic - complications Aortic Aneurysm, Thoracic - diagnostic imaging Blood Flow Velocity Bronchi - blood supply Collateral Circulation Fatal Outcome Female Humans Neovascularization, Pathologic - diagnostic imaging Neovascularization, Pathologic - etiology Neovascularization, Pathologic - physiopathology Pulmonary Veins - diagnostic imaging Superior Vena Cava Syndrome - diagnostic imaging Superior Vena Cava Syndrome - etiology Tomography, X-Ray Computed
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Beschreibung
Zusammenfassung:	Obstruction of the superior vena cava caused by acute aortic dissection can lead to collateral flow in the azygos and hemiazygos system, as well as to reversal of flow in the pleurohilar and bronchial veins. In the latter case, a small right-to-left shunt has formed. We describe the findings in such a case on a contrast enhanced spiral CT.
ISSN:	0938-7994 1432-1084
DOI:	10.1007/BF00187684