is the renal artery or renal vein smaller in the kidney
Renal artery aneurysm. A renal artery aneurysm is a bulging, weakened area in the wall of an artery to the kidney. Most of these aneurysms are small (less than two centimeters, or about three-quarters of an inch) and without symptoms. renal vein thrombosis is the formation of a clot in a vein to the kidney. Renal vascular disease is often associated with hypertension (high blood pressure). Hormones that influence blood pressure are affected by kidney function.