Leukemia, Prolymphocytic, B-Cell

**Definition:** A neoplasm of prolymphocytes affecting the blood, bone marrow, and spleen. It is characterized by prolymphocytes exceeding 55% of the lymphoid cells in the blood and profound splenomegaly.

**Tree numbers:** - C04.557.337.428.080.562 - C04.557.337.428.565.745 - C15.378.508.428.080.562 - C15.378.508.428.565.745 - C15.604.515.560.080.562 - C15.604.515.560.550.745 - C20.683.515.528.080.562 - C20.683.515.528.565.745

**Synonyms:** - B-Cell Prolymphocytic Leukemia