title: Isolated bone marrow natural killer cell lymphoma with central nervous system involvement mimicking a cerebral infarct.
abstract: BACKGROUND
  We describe the case of an isolated bone marrow natural killer (NK) cell lymphoma with central nervous system (CNS) involvement mimicking a cerebral infarct. CNS involvement in isolated bone marrow lymphoma has not been reported previously.
  
  
  METHODS
  A 49-year-old man with complaints of fever, confusion, and agitation was presented. A bone marrow biopsy was performed to investigate the etiology of bicytopenia which was consistent with NK-cell lymphoma. Brain MRI findings were suggestive of a subacute infarct.
  
  
  CONCLUSIONS
  Even if pathological signal changes of the brain without contrast enhancement resembling infarct are detected in patients with lymphoma on the magnetic resonance imaging, CNS involvement of the lymphoma should be kept in mind in the differential diagnosis.
authors.affiliation: Istanbul University, Cerrahpasa Medical Faculty, Department of Radiology, Istanbul, Turkey.
authors.forename: Ibrahim
authors.initials: I
authors.lastname: Adaletli
authors.forename: Celalettin
authors.initials: C
authors.lastname: Camci
authors.forename: Alper
authors.initials: A
authors.lastname: Sevinc
authors.forename: Efsun
authors.initials: E
authors.lastname: Urger
authors.forename: Harun
authors.initials: H
authors.lastname: Ozer
authors.forename: Ibrahim
authors.initials: I
authors.lastname: Sari
mesh_terms: D019046:Bone Marrow Neoplasms / Q000175:diagnosis*; D001932:Brain Neoplasms / Q000175:diagnosis*; D002544:Cerebral Infarction / Q000175:diagnosis*; D003937:Diagnosis, Differential; D006801:Humans; D016399:Lymphoma, T-Cell / Q000175:diagnosis*; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged