SEER is an authoritative source of information on cancer incidence and survival in the United States. SEER currently collects and publishes cancer incidence and survival data from population-based cancer registries covering approximately 28 percent of the U.S. population.
2. Chronic lymphoproliferative disorder of NK cells- predominantly involves the peripheral blood and bone marrow. This neoplasm may occur in association with other medical conditions such as solid and hematologic tumors, vasculitis, splenectomy, neuropathy, and autoimmune disorders.
Many patients receive no treatment, some receive aspirin, others corticosteroids, or they may receive chemotherapy in low doses. Some patients have a splenectomy.