Successful Treatment of Type 3b Endoleak after AFX Using TREO
Tobuhiro Nita1, Hironori Baba1, Yuji Hironaka1
1Department of Cardiovascular Surgery, JCHO Kyushu Hospital, Kitakyushu, Fukuoka, Japan.
Annals of Vascular Diseases
|June 10, 2025
Summary
Late endoleaks after AFX stent-graft repair are common. Relining with the TREO stent-graft successfully treated a type 3b endoleak, offering a viable solution for complex EVAR complications.
Area of Science:
- Vascular Surgery
- Endovascular Aneurysm Repair (EVAR)
- Medical Device Technology
Background:
- Late postoperative type 3 endoleaks are frequently reported with the AFX stent-graft.
- The AFX stent-graft's endoskeletal design may contribute to complications like wire entrapment and type 1a endoleaks.
Observation:
- An 84-year-old male patient with a history of EVAR using the AFX stent-graft presented with a type 3b endoleak four years after the initial procedure.
- The patient underwent a relining procedure using the TREO stent-graft.
Findings:
- The TREO stent-graft facilitated straightforward contralateral gate cannulation.
- A long proximal landing zone was successfully secured after the relining procedure.
Implications:
- The TREO stent-graft demonstrates potential as an effective option for relining the AFX stent-graft in cases of type 3b endoleak.
- This approach may offer a solution for managing late complications associated with specific EVAR devices.


