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Internal iliac artery (IIA) aneurysms, while rare, carry a significant risk of mortality if they rupture. Endovascular intervention is now the preferred method of treatment for IIAs; however, due to technical considerations, this is not always feasible. We report a case of a patient who developed an enlarging IIA aneurysm in association with a type 2 endoleak supplied by multiple feeding arteries where conventional endovascular treatment was not possible. A novel method of effectively treating the IIA aneurysm with a posterior approach via image-guided puncture of the superior gluteal artery was employed. Five arteries supplying the superior gluteal from the contralateral internal iliac artery were selectively catheterised and coiled before the aneurysmal sac was embolised. The patient made an uneventful recovery, and follow-up imaging demonstrated resolution of the endoleak and decompression of the aneurysmal sac. This case demonstrates that the posterior approach is a safe and viable method of treating internal iliac artery aneurysm when traditional endovascular approaches are technically possible.

case reports in vascular medicine

Novel Treatment of an Enlarging Internal Iliac Artery Aneurysm in Association with a Type 2 Endoleak via Percutaneous Embolisation of the Superior Gluteal Artery through a Posterior Approach