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AAA and Visceral Aneurysms

  • Jaap Ottevanger
  • Stephen Merrilees
  • Ian Civil
Chapter
Part of the Hot Topics in Acute Care Surgery and Trauma book series (HTACST)

Abstract

An aneurysm is a section of artery which is dilated in comparison to its original vessel diameter. By definition this is generally accepted as dilatation by at least one and a half times the normal vessel diameter. Therefore aneurysms are defined by the artery affected rather than by absolute diameters. Aneurysms can be classified as either true or false. True aneurysms are those which are bound by all three layers of the artery (intima, media, and adventitia), whereas false aneurysms, also known as pseudoaneurysms, are bound only by adventitia. As an aneurysm enlarges, the risk of rupture increases, but for any given size, pseudoaneurysms have a relatively higher rupture risk when compared to true aneurysms of the same size.

Notes

Acknowledgements

A special thanks to associate professor An Tang (University of Montreal) for allowing us to use his previously published illustrative images (Figs. 16.3, 16.4, 16.5, 16.6, 16.7, and 16.8) [39].

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Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Interventional Radiology FellowAuckland City HospitalAucklandNew Zealand
  2. 2.Interventional RadiologistAuckland City HospitalAucklandNew Zealand
  3. 3.Auckland City HospitalAucklandNew Zealand

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