Delayed pseudoaneurysm after renal artery angioplasty.

Purpose: To report delayed pseudoaneurysm formation after percutaneous renal artery angioplasty.

Case Reports: A 56-year-old woman succumbed to complications of a ruptured right juxtarenal aortic pseudoaneurysm 2 years after right renal artery stenting for renal impairment. The juxtarenal aorta had been normal on aortography at the time of angioplasty. She gave a history of right-sided back pain that started within 8 months of the angioplasty. A 21-year-old woman with left renal artery stenosis due to fibromuscular dysplasia was treated with balloon angioplasty, after which there was evidence of active extravasation. The completion angiogram, after a period of observation, documented cessation of the leak. Follow-up angiography because of persisting hypertension disclosed a large, asymptomatic, intrarenal pseudoaneurysm that was repaired with bench surgery and autotransplantation.

Conclusions: We advise that patients with symptoms referable to the site of renal artery intervention and those who have had complicated interventions should have follow-up imaging to exclude pseudoaneurysm formation.