Most common cause of renal aery stenosis above 50 years of age is ?
Atherosclerotic renal aery stenosis is common and prevalence increases with age. Large vessel renal aery occlusive disease can result from extrinsic compression of vessel ,intimal dissection, fibromuscular dysplasia, or most commonly atherosclerotic disease. Ref:Harrison 20 th edition pg no 1906
Atherosclerosis
FMD
Takayasu aeritis
RCC
Kidney