Enlarged spleen (splenomegaly)

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Definition

The spleen is a small organ about the size of your fist. It's located just below your rib cage on your left side. The spleen helps your body fight infection and filter unwanted material, such as old or damaged blood cells. The spleen also produces red blood cells and certain types of white blood cells.

Typically, an enlarged spleen (splenomegaly) is a sign of an underlying problem. Many conditions — from infections to liver disease and blood cancers — can cause an enlarged spleen. Treatment of an enlarged spleen is usually aimed at the underlying problem.

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Symptoms