endoleak
Pronunciation: EN-doh-leek
Persistent blood flow into an aneurysm sac after endovascular repair, potentially causing aneurysm expansion.
Full Definition
Endoleak is a complication specific to endovascular aneurysm repair (EVAR) where blood continues to flow into the aneurysm sac despite stent graft placement. Endoleaks are classified into five types based on their source: Type I (attachment site leak), Type II (retrograde flow from branch vessels), Type III (graft fabric tear or modular disconnect), Type IV (graft porosity), and Type V (endotension without identifiable leak). Type I and III endoleaks require immediate intervention due to high pressure, while Type II endoleaks may be managed conservatively. Detection and classification of endoleaks are crucial for post-EVAR surveillance and determining appropriate treatment strategies.
Usage
Usage note: Always specify endoleak type and management plan in documentation.
In Context
- "CT angiography identified a Type II endoleak from the inferior mesenteric artery requiring intervention." — post-operative imaging report
- "The patient developed a Type I endoleak requiring proximal cuff extension to achieve adequate seal." — revision procedure note