hi, I m 18 years old and i got mono last year. My spleen is still swollen and i m still very ill. I ve been tested for leukemia and it showed up negative. I ve lost 15 pounds since February of 2012. What could be wrong? my symptoms are: pain under the rib cage, headaches, always full, weight loss , fatigue, pale skin, and jaundice .
Hi, You have got splenomegaly. There are a number of causes. This may be secondary to infection like Kalamazoo, malaria, typhoid, infectious mononucleosis, tropical splenomegaly syn Chat Doctor.  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.