Chronic lymphocytic leukemia

Abstract

Chronic lymphocytic leukemia/small lymphocytic lymphoma (CLL/SLL) is a mature B-cell neoplasm characterized by progressive accumulation of monoclonal B lymphocytes. CLL is considered being identical to SLL. Malignant cells seen in CLL and SLL have the same pathological and immunophenotypic features. The term CLL is used when the disease occurs mainly in the blood, while the term SLL is used when the involvement is mainly nodal.