Detection of occult renovascular disease in unexplained chronic kidney disease.

Atherosclerotic renal artery stenosis (RAS) is a recognized cause of renal impairment. RAS is often overlooked in unexplained chronic kidney disease (CKD). A retrospective analysis of renal angiograms was performed to determine the prevalence of occult renovascular disease in 64 (M:F, 46:18; ages 21-81 years [median 60 years]) patients with unexplained CKD.