Hi, You have got spleenomegaly. There are number of causes. This may be secondary to infection like kala-azar, malaria, typhoid, infectious mononucleosis, tropical spleenomegaly syndrome etc. There may be other more serious diagnosis like lymphoma. Proper clinical examination is mandatory. Complete blood count , abdominal imaging search for other swelling in other parts of body should be done. Consult your physician.