Hodgkin Lymphoma is a disease of the white blood cells known as B-lymphocytes which are normally found in lymph nodes, blood, and throughout the body. Hodgkin lymphoma most commonly affects lymph nodes found in the neck or center of the chest. There are different types of Hodgkin lymphoma, many of which are rare. Most Hodgkin lymphomas are diagnosed by the presence of a specific cell known as the Reed-Sternberg cell. Known causes of lymphoma may include family history of Hodgkin lymphoma, history of infection with the Epstein-Barr virus, use of immunosuppressive medications, or HIV infection, while some causes are still unknown. The stage of Hodgkin lymphoma can vary at diagnosis and throughout treatment. Stages of Hodgkin’s lymphoma include I, II, III, IV. The effectiveness of the treatment may depend upon the stage at diagnosis.