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Renal vein thrombosis
Alternative namesClot in the renal vein; Occlusion - renal vein
DefinitionRenal vein thrombosis is a blood clot that develops in the vein that drains the kidney.
Causes, incidence, and risk factorsRenal vein thrombosis is a fairly uncommon situation that may happen after trauma to the abdomen or back, or it may occur because of a tumor , stricture (scar formation), or other blockage of the vein. 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.
Renal vein thrombosis should be suspected if symptoms develop after femoral vein cannulation (such as for an angiogram test).
Signs and testsAn examination is often nonspecific. It may indicate nephrotic syndrome or other causes of renal vein thrombosis.
TreatmentThe treatment is focused on preventing new clot formations and reducing the risk of the clot traveling to other locations in the body (embolization). Anticoagulants may be given to prevent formation of new clots. Bedrest or limited activity may be recommended for a brief period.
Expectations (prognosis)Renal vein thrombosis usually resolves over time without permanent injury to the kidneys.
Calling your health care providerCall your health care provider if symptoms indicating renal vein thrombosis may be present.
If you have experienced renal vein thrombosis, call your health care provider if decreased urine output, difficulty breathing , or other new symptoms develop.
PreventionThere is no specific prevention for renal vein thrombosis. Maintaining fluids in the body to avoid dehydration may help to reduce its risk.
Update Date: 1/19/2004Irfan A. Agha, M.D., Department of Medicine, St. Louis University, St. Louis, MO. Review provided by VeriMed Healthcare Network.
Last updated: Tue, 06 Jan 2009 00:20:03 GMT