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The World’s Leading Authority for Chronic Lymphocytic Leukemia Patients


In 1928, Dr. Richter described a patient with chronic lymphocytic leukemia (CLL), who progressed to develop an aggressive large cell lymphoma. Richter syndrome (RS), also called Richter transformation, is now understood to describe the development of an aggressive lymphoma in patients with CLL or small lymphocytic lymphoma (SLL).