Renal vein thrombosis (patient information)

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Renal vein thrombosis

Overview

What are the symptoms?

What are the causes?

Who is at highest risk?

When to seek urgent medical care?

Diagnosis

Treatment options

Where to find medical care for Renal vein thrombosis?

What to expect (Outlook/Prognosis)?

Possible complications

Prevention

Renal vein thrombosis On the Web

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Editors-in-Chief: C. Michael Gibson, M.S., M.D. Associate Editor-In-Chief: Ujjwal Rastogi, MBBS [1]

Overview

Renal vein thrombosis is a blood clot that develops in the vein that drains blood from the kidney.

What are the symptoms of Renal vein thrombosis?

  • Blood clot to the lung
  • Bloody urine
  • Decreased urine output
  • Flank pain or low back pain

What causes Renal vein thrombosis?

Renal vein thrombosis is an uncommon disorder that may be caused by:

In adults, the most common cause is nephrotic syndrome. In infants, the most common cause is dehydration.

Who is at highest risk?

Its a relatively less common disease but any of the above mentioned condition can predispose risk for renal vein thrombosis.

When to seek urgent medical care?

Call your health care provider if you have symptoms of renal vein thrombosis.

If you have experienced renal vein thrombosis, call your health care provider if you develop decreased urine output, difficulty breathing, or other new symptoms.

Diagnosis

An examination may not reveal the specific problem, but may indicate nephrotic syndrome or other causes of renal vein thrombosis.

  • Abdominal CT scan
  • Abdominal MRI
  • Abdominal ultrasound
  • Duplex Doppler exam of the renal veins
  • Urinalysis may show protein in the urine or red blood cells in the urine
  • X-ray of the kidney veins (venography)

Treatment options

The treatment is focused on preventing new clot formations and reducing the risk of the clot traveling to other locations in the body (embolization).

You may get medications that prevent blood clotting (anticoagulants) to stop new clots from forming. Your doctor may recommend bedrest or limited activity for a brief period.

If severe acute renal failure develops, you may need dialysis, but it should be temporary.

Where to find medical care for Renal vein thrombosis?

Directions to Hospitals Treating Renal vein thrombosis

What to expect (Outlook/Prognosis)?

Renal vein thrombosis usually gets better over time without permanently injuring the kidneys.

Possible complications

  • Acute renal failure (especially if thrombosis occurs in a dehydrated child)
  • Blood clot moves to the lungs (pulmonary embolism)
  • Formation of new blood clots

Prevention

There is no specific prevention for renal vein thrombosis in most people. Keeping enough fluids in the body to avoid dehydration may help reduce its risk.

In people who have had a kidney transplant, aspirin is sometimes used to prevent renal vein thrombosis. In people with certain chronic kidney diseases, blood thinners such as warfarin may be recommended.

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