Renal Stent Graft Migration Following Chimney Endovascular Aneurysm Repair

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.