Zenith Cook limb type IIIB endoleak causing aneurysm rupture five years after EVAR
Peter Mezes1, Morad Sallam2, Athanasios Diamantopoulos3
1Department of Interventional Radiology, Guy's and St. Thomas' NHS Foundation Trust, St Thomas' Hospital, London, UK North Bristol NHS Trust, Department of Radiology, Southmead Hospital, Bristol, UK drpetermezes@gmail.com.
Type III endoleaks, a rare complication of endovascular aneurysm repair, can cause late rupture. This case details endovascular treatment for a ruptured abdominal aortic aneurysm due to a graft fabric defect (type IIIB endoleak).
Area of Science:
- Vascular Surgery
- Endovascular Repair
- Aortic Aneurysm
Background:
- Type III endoleaks are infrequent late complications following endovascular abdominal aortic aneurysm repair (EVAR).
- These leaks occur due to modular component disconnection (Type IIIA) or graft fabric defects (Type IIIB), leading to sac pressurization.
- Late complications necessitate ongoing surveillance and understanding of potential failure modes.
Observation:
- A patient presented with a ruptured infrarenal aortic aneurysm five years post-elective EVAR.
- The rupture was attributed to a Type IIIB endoleak, specifically suspected graft material erosion of the contralateral limb.
- This represents the first reported instance of late aneurysm rupture caused by a fabric defect in a Cook Zenith graft limb.
Findings:
- Successful endovascular treatment was performed for the ruptured aneurysm.
- The Type IIIB endoleak stemmed from graft material erosion, a rare but serious complication.
- Device migration, even minimal, can compromise the graft's integrity over time.
Implications:
- This case underscores the critical importance of proximal fixation placement in healthy aorta during EVAR.
- It highlights the potential for late-onset graft fabric defects and their severe consequences.
- Long-term surveillance protocols for EVAR patients should consider the possibility of rare graft-related complications.
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