Leukemia, Hairy Cell

**Definition:** A neoplastic disease of the lymphoreticular cells which is considered to be a rare type of chronic leukemia; it is characterized by an insidious onset, splenomegaly, anemia, granulocytopenia, thrombocytopenia, little or no lymphadenopathy, and the presence of hairy or flagellated cells in the blood and bone marrow.

**Tree numbers:** - C04.557.337.415 - C15.378.508.415 - C15.604.515.553 - C20.683.515.517

**Synonyms:** - Hairy Cell Leukemia - Leukemic Reticuloendotheliosis - Reticuloendotheliosis, Leukemic