People with HIV (human immunodeficiency virus) have a weakened immune system. As a result, they are more likely to develop certain cancers. This includes non-Hodgkin's lymphoma (NHL). Also known as AIDS-related lymphoma, this is a cancer of white blood cells. White blood cells fight infection.
AIDS (acquired immunodeficiency syndrome) is a later stage of HIV infection. Fortunately, antiretroviral therapy has cut the rate of non-Hodgkin's lymphoma in HIV-positive people significantly.