<prompt> Richters syndrome refers to which of the following malignant transformation?CLL evolving into aggressive lymphomaHairy cell leukemia evolving to AMLBlast crisis in CMLSplenic infiltration in NHL  <response>: Richters transformation or Richters syndrome is a complication of B cell chronic lymphocytic leukemia CLL or hairy cell leukemia HCL in which the leukemia changes into a fast-growing diffuse large B cell lymphoma. 