<unk>  <unk>  is defined as the unilateral or bilateral progressive narrowing of the renal<unk> es or their proximal branches of more than 50% in diameter.<unk>  is a heterogeneous group of diseases that most commonly include: fibromuscular dysplasia (FMD) and atherosclerotic<unk>  (ARAS).
Although<unk>  may be an isolated asymptomatic condition,
It may commonly lead to secondary hypertension that is thus called renovascular hypertension (RVHT), ischemic nephropathy, and chronic renal insufficiency.
Approximately 90% of<unk>  cases occur due to progressive atherosclerosis.
The ostium and proximal third of the renal<unk> es are the most commonly involved regions in atherosclerosis.
Segmental and diffuse atherosclerosis may still be seen in the minority of patients, especially in context of chronic kidney disease and poor renal survival.
Renal artery stenosis
Renal amyloidosis
Polycystic kidney disease
Renal vein thrombosis
Hypertensive nephropathy
Renovascular disease
Renal cell carcinoma
Renal oncocytoma