CLL is a disorder where too many lymphocytes, a type of white blood cell, are produced. This disease results in the abnormal accumulation of lymphocytes in the marrow, the bloodstream and the lymphatic system. CLL always involves the bone marrow, frequently involves the lymph nodes and less often infiltrates the spleen.
Chronic lymphocytic leukemia (CLL) is a form of slowly-progressing leukemia, a disease characterized by an accumulation of abnormal lymphocytes, typically B-cells, in the blood and bone marrow. The malignant cells grow both in the bone marrow, where they can crowd out normal blood-producing cells, and the lymph nodes, where they can result in bulky and/or uncomfortable tumors.
Leukemia of mature lymphocytes. Mostly slowly progressive. Occurs mainly in older adults