At Mayo Clinic, we take the time to listen, to find answers and to provide you the best care.
Renal artery stenosis is the narrowing of one or more arteries that carry blood to your kidneys (renal arteries).
Narrowing of the arteries prevents normal amounts of oxygen-rich blood from reaching your kidneys. Your kidneys need adequate blood flow to help filter waste products and remove excess fluids. Reduced blood flow may increase blood pressure in your whole body (systemic blood pressure) and injure kidney tissue.
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Renal artery stenosis may cause no signs or symptoms until the condition reaches an advanced state. Most people with renal artery stenosis have no signs and symptoms. The condition may be discovered incidentally during testing for some other reason. Your doctor may also suspect a problem if you have:
As renal artery stenosis progresses, other signs and symptoms may include:
Make an appointment with your doctor if you have any persistent signs or symptoms that worry you.
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The two main causes of renal artery stenosis include:
Atherosclerosis and fibromuscular dysplasia can affect other arteries in your body as well as your kidney (renal) arteries and cause complications.
Rarely, renal artery stenosis results from other conditions such as inflammation of the blood vessels (vasculitis); a nervous system disorder that causes tumors to develop on nerve tissue (neurofibromatosis); or a growth that develops in your abdomen and presses on your kidneys' arteries (extrinsic compression).
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At Mayo Clinic, we take the time to listen, to find answers and to provide you the best care.
For diagnosis of renal artery stenosis, your doctor may start with:
Imaging tests commonly done to diagnose renal artery stenosis include:
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Possible complications of renal artery stenosis include:
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As a part of your treatment plan for renal artery stenosis, your doctor may recommend making certain lifestyle changes:
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Most cases of renal artery stenosis result from atherosclerosis. Risk factors for atherosclerosis of the renal arteries are the same as for atherosclerosis anywhere else in your body and include:
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