chronic lymphocytic leukemia Definition

lymphocytic leukemia that is marked by an abnormal increase in the number of mature lymphocytes and especially B cells, that is characterized by slow onset and progression of symptoms which include anemia, pallor, fatigue, appetite loss, granulocytopenia, thrombocytopenia, hypogammaglobulinemia, and enlargement of the lymph nodes, liver, and spleen, and that occurs especially in older adults —abbreviation CLL