# Renal Stent Graft Migration Following Chimney Endovascular Aneurysm Repair

## TL;DR

A 78-year-old man experienced complications after a minimally invasive aortic repair, requiring further treatment due to stent migration.

## Contribution

Highlights the risk of stent graft migration in chimney endovascular aneurysm repair and its clinical implications.

## Key findings

- Migration of a left renal artery chimney stent graft caused aneurysm enlargement.
- Endovascular reintervention successfully reduced the aneurysm and prevented recurrence.
- Chimney repair requires careful monitoring for stent graft migration.

## Abstract

A 78-year-old male presented with progressive enlargement of a pararenal abdominal aortic aneurysm following chimney endovascular aneurysm repair. The aneurysmal expansion was attributed to an endoleak secondary to migration of the left renal artery chimney stent graft, resulting in a 5-mm increase in aneurysm diameter over 6 months. Endovascular reintervention successfully induced aneurysm regression, with no recurrence of endoleak on annual imaging follow-up. While chimney endovascular aneurysm repair presents a minimally invasive alternative for managing complex aortic pathologies, including pararenal abdominal aortic aneurysms, vigilance regarding potential stent graft migration is essential.