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Kidney anatomy
Kidney anatomy


Kidney - blood and urine flow
Kidney - blood and urine flow


Definition:

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



Alternative Names:

Clot in the renal vein; Occlusion - renal vein



Causes, incidence, and risk factors:

Renal vein thrombosis is a fairly uncommon situation that may happen after trauma to the abdomen or back, or it may occur due to:

  • Scar formation
  • Stricture
  • Tumor

It may be associated with nephrotic syndrome .

In some children, it occurs after severe dehydration and is a more serious condition than in adults. Dehydration is the most common cause of renal vein thrombosis in infants.



Signs and tests:

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



Treatment:

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.



Support Groups:



Expectations (prognosis):

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



Complications:

Calling your health care provider:

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.



Prevention:

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



References:

Kanso AA, Hassan NMA, Badr KF. Microvascular and macrovascular diseases of the kidney. In: Brenner BM, ed. Brenner and Rector's The Kidney. 8th ed. Philadelphia, Pa; Saunders Elsevier; 2007: chap 32.




Review Date: 5/20/2009
Reviewed By: Parul Patel, MD, Private Practice specializing in Nephrology and Kidney and Pancreas Transplantation, Affiliated with California Pacific Medical Center, Department of Transplantation, San Francisco, CA. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.
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789 Central Avenue, Dover, NH 03820
Phone: (603) 742-5252
Toll free: 1 (877) 201-7100