Splenomegaly is a larger-than-normal spleen. The spleen is an organ in the upper left part of the belly.
Spleen enlargement; Enlarged spleen; Spleen swelling
The spleen is an organ that is a part of the lymph system. The spleen filters the blood and maintains healthy red and white blood cells and platelets. It also plays a role in immune function.
Many health conditions can affect the spleen. These include:
Symptoms of splenomegaly include:
Splenomegaly can be caused by any of the following:
In rare cases, an injury can rupture the spleen. If you have splenomegaly, your health care provider may advise you to avoid contact sports. Your provider will tell you what else you need to do to take care of yourself and any medical condition.
There are usually no symptoms from an enlarged spleen. Seek medical help right away if pain in your belly is severe or gets worse when you take a deep breath.
The provider will ask about your symptoms and medical history.
A physical exam will be done. The provider will feel and tap along the upper left part of your belly, especially just under the rib cage.
Tests that may be done include:
Treatment depends on the cause of splenomegaly.
Winter JN. Approach to the patient with lymphadenopathy and splenomegaly. In: Goldman L, Schafer AI, eds. Goldman-Cecil Medicine. 26th ed. Philadelphia, PA: Elsevier; 2020:chap 159.
Vos PM, Barnard SA, Cooperberg PL. Benign and malignant lesions of the spleen. In: Gore RM, Levine MS, eds. Textbook of Gastrointestinal Radiology. 4th ed. Philadelphia, PA: Elsevier Saunders; 2015:chap 105.
Vos PM, Mathieson JR, Cooperberg PL. The spleen. In: Rumack CM, Levine D, eds. Diagnostic Ultrasound. 5th ed. Philadelphia, PA: Elsevier; 2018:chap 5.