title: A rare case of empyema. Answer: Transformation of CLL into diffuse large B-cell lymphoma, also known as Richter syndrome.
authors.affiliation: Department of Internal Medicine, Albany Medical Center. Electronic address: neil.yager@gmail.com.
authors.forename: Neil M
authors.initials: NM
authors.lastname: Yager
authors.affiliation: Department of Internal Medicine, Albany Medical Center.
authors.forename: Ketan
authors.initials: K
authors.lastname: Ghate
authors.affiliation: Department of Radiology, Albany Medical Center.
authors.forename: Rebecca L
authors.initials: RL
authors.lastname: Swan
authors.affiliation: Department of Pulmonary and Critical Care, Albany Medical Center.
authors.forename: Ali
authors.initials: A
authors.lastname: Farrokh
authors.affiliation: Department of Internal Medicine, Albany Medical Center.
authors.forename: Kerry
authors.initials: K
authors.lastname: Barba
authors.affiliation: Department of Pulmonary and Critical Care, Albany Medical Center.
authors.forename: Scott H
authors.initials: SH
authors.lastname: Beegle
mesh_terms: D000369:Aged, 80 and over; D002471:Cell Transformation, Neoplastic / Q000473:pathology*; D018450:Disease Progression; D004646:Emphysema / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000209:etiology*; D017051:Hospice Care; D006801:Humans; D015451:Leukemia, Lymphocytic, Chronic, B-Cell / Q000150:complications* / Q000473:pathology; D016403:Lymphoma, Large B-Cell, Diffuse / Q000150:complications* / Q000473:pathology; D008297:Male; D011859:Radiography