Richter's syndrome refers to which of the following malignant transformation?
Richter's transformation or Richter's 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.
CLL evolving into aggressive lymphoma
Hairy cell leukemia evolving to AML
Blast crisis in CML
Splenic infiltration in NHL