B Cell Leukemia, Chronic

A chronic Leukemia characterized by abnormal B-Lymphocytes and often generalized lymphadenopathy. In Patients presenting predominately with Blood and Bone Marrow involvement it is called chronic Lymphocytic Leukemia (CLL); in those predominately with enlarged Lymph Nodes it is called small lymphocytic Lymphoma. These terms represent spectrums of the same Disease.