What are the causes and symptoms of renal artery stenosis?
The two main causes of renal artery stenosis are atherosclerosis and fibromuscular disease. Fibromuscular diseases such as fibromuscular dysplasia cause growth of fibrous tissues on the arterial wall. Stenosis may also occur when scar tissue forms in the renal artery after trauma to the kidney. Renal arterial stenosis has no overt symptoms. Eventually, untreated renal arterial stenosis causes secondary complications such as chronic kidney failure, which may be characterized by frequent urination, anemia, edema, headaches, hypertension, lower back pain, and other signs and symptoms. Source: The Gale Group.
