Clinical Staging and Immune Cytopenias

Patients with anemia and/or thrombocytopenia of immune origin, rather than secondary to marrow infiltration by CLL B-lymphocytes, were not considered a separate prognostic group in any of the staging systems. It has been suggested by some investigators that CLL patients who have anemia and/or thrombocytopenia of immune origin seem to have a better clinical outcome, compared with those who have anemia and/or thrombocytopenia owing to bone marrow infiltration (23,24). Data from a large number of patients would be required to reach a definitive conclusion. Some investigators have suggested classifying these patients as stage C or Rai stage III or IV, immune (25).

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