Classification of endoleaks
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Endoleaks occur when an aneurysmal sac continues to be pressurised despite endoluminal stent placement.
Classification
There are five types:
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type 1: leak at graft ends (inadequate seal) - most common after repair of thoracic aortic aneurysms 4
- 1a: proximal
- 1b: distal
- 1c: iliac occluder
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type 2: sac filling via branch vessel (e.g. lumbar or inferior mesenteric artery)
- most common after repair of abdominal aortic aneurysms 4 (80%)
- sometimes referred to as a "retroleak"
- enthusiastic examiners sometimes ask for the eponymous name of the large collateral artery between the IMA and SMA = Riolan's arch
- most spontaneously resolve and require no treatment
- 2a: single vessel
- 2b: two vessels or more
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type 3: leak through a defect in graft fabric (mechanical failure of graft)
- 3a: junctional separation of the modular components
- 3b: fractures or holes involving the endograft
- type 4: a generally porous graft (intentional design of graft)
- type 5: endotension
-<p><strong><a href="/articles/endoleak">Endoleaks</a></strong> occur when an aneurysmal sac continues to be pressurised despite endoluminal stent placement.</p><h4>Classification</h4><p>There are five types:</p><ul>- +<p><a href="/articles/endoleak">Endoleaks</a> occur when an aneurysmal sac continues to be pressurised despite endoluminal stent placement.</p><h4>Classification</h4><p>There are five types:</p><ul>
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