Lymphoma starts in the lymph cells that are part of the body’s immune system. There are several different types of lymphoma. Hodgkin’s disease, also called Hodgkin’s lymphoma, starts in white blood cells called lymphocytes. Non-Hodgkin’s lymphoma (NHL), is more common. Lymphoma of the skin starts only in the skin, not in any other organs or tissues. Waldenstrom macroglobulinemia (WM), is another type of non-Hodgkin;s lymphoma in which the cancer cells make large amounts of an abnormal protein.