We report the case of a young woman with three left renal artery aneur
ysms, diagnosed immediately postpartum, associated with a de novo high
blood pressure. To assess anatomical and functional characteristics o
f renal artery aneurysms, renal angiogram, MRI, intravenous pyelograph
y, ultrasonography and radionuclide renography were performed. Two pat
ent saccular renal artery aneurysms were demonstrated in the left kidn
ey by renal angiogram. A larger, thrombosed aneurysm was also depicted
on the left side on ultrasonography, MRI and renal angiogram. The lar
ger aneurysm was responsible for renovascular disease of the middle th
ird of the kidney, as demonstrated by captopril and baseline radionucl
ide renographic studies. It also impeded drainage of the lower pyeloca
lyceal group, without obstructing it, as shown by concomitant furosemi
de (Lasix) evaluations.