Professional
Technical
IVT
Type IIIA endoleak
Blood flow into the aneurysm sac through a defect in the stent graft fabric.
Full Definition
Type IIIA endoleak represents a specific category of endoleak following endovascular aortic aneurysm repair where blood enters the aneurysm sac through a structural defect in the stent graft fabric itself. This complication may result from fabric tears, manufacturing defects, or material fatigue over time. Type IIIA endoleaks are distinguished from Type IIIB endoleaks, which occur through modular disconnections between stent graft components. Both subtypes require prompt intervention as they maintain systemic pressure within the aneurysm sac.
Usage
Usage note: Distinguish from Type IIIB (modular disconnection); both are high-pressure endoleaks requiring intervention.
In Context
- "Post-procedural CT angiography revealed a Type IIIA endoleak requiring immediate graft relining." — interventional radiology report
- "The patient developed a Type IIIA endoleak five years post-EVAR, likely secondary to fabric fatigue." — vascular surgery follow-up
Also known as
fabric tear endoleak
graft defect endoleak
Don't confuse with
Type IIIB endoleak
Type II endoleak