The spleen is situated under the rib cage on the upper-left abdominal side and toÂ the left ofÂ the stomach region. This organ is about 4 inches in length and has a fist shape. Some important functions of the spleen include blood purification and the storage of blood cells, according to Healthline.Â
There can be different medical conditions, such as liver disease and mononucleosis, that can cause splenomegaly, or an enlarged spleen. Some other health problems that can affect the spleen are low platelet counts and an injury that causes a rupture.
In some cases, people may not experience major symptoms with an enlarged spleen, and the condition is diagnosed through either a physical exam or testing. Treatment is dependent on the direct cause for the spleen condition. An enlarged spleen caused by an infection may require antibiotics.