[Richter's syndrome].
D000368:Aged; D006801:Humans; D007945:Leukemia, Lymphoid / Q000150:complications*; D016403:Lymphoma, Large B-Cell, Diffuse / Q000209:etiology* / Q000473:pathology; D008297:Male; D008875:Middle Aged; D009378:Neoplasms, Multiple Primary / Q000175:diagnosis*; D013577:Syndrome