NCIt synonyms : High Count Monoclonal B-Cell Lymphocytosis;
NCIt definition : Monoclonal B-cell lymphocytosis characterized by the presence of more than 5 x 10
9/L abnormal B-lymphocytes in peripheral blood and presence of the characteristic
immunophenotype of chronic lymphocytic leukemia. This type of monoclonal B-cell lymphocytosis
evolves to chronic lymphocytic leukemia at a rate of 1-2% per year.;