Lymphoma, a cancer of the immune system, occurs in two forms: Hodgkin disease and non-Hodgkin lymphoma, each of which has many sub-types.
According to the Leukaemia & Lymphoma Society’s 2014-2015 blood cancer fact sheet, an estimated 761,659 people in the United States either live with, or are in remission from, lymphoma. Of those, 177,526 are living with or are in remission from Hodgkin lymphoma, and 584,133 are living with or are in remission from non-Hodgkin lymphoma.
1Doctors don’t know exactly what causes lymphoma
But some factors may increase a person’s risk, such as family history of lymphoma or having an autoimmune disease. Organ transplant recipients and people who have been infected with viruses, such as Epstein-Barr, HIV, HTLV-1, and hepatitis C, are also at risk. Exposure to pesticides, fertilizers, and organic solvents (like benzene) are environmental risk factors.