CD5 and B-cell chronic lymphocytic leukemia: Typically presenting through the indolent accumulation of CD5+ B-cells in the blood, bone marrow, and secondary lymphoid structures, chronic lymphocytic leukemia (CLL) is categorized as a type of B-cell non-Hodgkin lymphoma resulting in clinically notable lymphocytosis, lymphadenopathy, and splenomegaly [1,2,3].