The azygos vein pathway: an overview from anatomical variations to pathological changes

Sara Piciucchi, Domenico Barone, Stefano Sanna, Alessandra Dubini, Lawrence R. Goodman, Devil Oboldi, Mauro Bertocco, Cesario Ciccotosto, Giampaolo Gavelli, Angelo Carloni, Venerino Poletti

Research output: Contribution to journalArticle

Abstract

The azygos venous system represents an accessory venous pathway supplying an important collateral circulation between the superior and inferior vena cava. The aim of this article is to revise the wide spectrum of changes ranging from normal to pathological conditions involving the azygos system. Teaching points • The azygos vein is a collateral venous pathway, becoming a vital shunt if major pathways of venous return are obstructed. • In azygos continuation, the azygos vein becomes significantly enlarged due to inferior vena cava interruption. • Fibrosing mediastinitis is an underestimated acquired disorder. • Fibrosing mediastinitis induces a variable engorgement of collateral veins. • Fibrosing mediastinitis leads to superior vena cava syndrome.

Original languageEnglish
Pages (from-to)619-628
Number of pages10
JournalInsights into Imaging
Volume5
Issue number5
DOIs
Publication statusPublished - Oct 1 2014

Keywords

  • Anatomical variations
  • Azygos continuation
  • Azygos vein
  • Fibrosing mediastinitis
  • Inferior vena cava (IVC)
  • Superior vena cava syndrome

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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    Piciucchi, S., Barone, D., Sanna, S., Dubini, A., Goodman, L. R., Oboldi, D., Bertocco, M., Ciccotosto, C., Gavelli, G., Carloni, A., & Poletti, V. (2014). The azygos vein pathway: an overview from anatomical variations to pathological changes. Insights into Imaging, 5(5), 619-628. https://doi.org/10.1007/s13244-014-0351-3