Diagnosis
Physical exam and history, Complete blood count (CBC), Blood chemistry studies, LDH test (lactic dehydrogenase), Hepatitis B and hepatitis C test, HIV test, CT scan, PET scan, Bone marrow aspiration and biopsy, Lymph node biopsy, Immunohistochemistry, Cytogenetic analysis, FISH (fluorescence in situ hybridization), Immunophenotyping.