AJDRAJNR - American Journal of Neuroradiology

Published ahead of print on January 22, 2009
doi: 10.3174/ajnr.A1447
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CT and MR Imaging Features of Primary Central Nervous System Lymphoma in Norway, 1989–2003

I.S. Haldorsena,c, J. Kråkenesa,c, B.K. Krossnesd, O. Mellab,e and A. Espelanda,c

a Department of Radiology, Haukeland University Hospital, Bergen, Norway
b Department of Oncology and Medical Physics, Haukeland University Hospital, Bergen, Norway
c Section for Radiology, Department of Surgical Sciences, University of Bergen, Bergen, Norway
d Department of Pathology, Rikshospitalet University Hospital, Oslo, Norway
e Section of Oncology, Institute of Medicine, University of Bergen, Bergen, Norway


Figure 1
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  		Fig 1. Single lesion at CT (A–C) and MR imaging (D) in 3 patients: a hyperattenuated lesion in the frontal lobe on noncontrast CT (A) with marked enhancement at contrast-enhanced CT (B). C, Marked contrast enhancement is seen in a lesion in the corpus callosum. D, Focal lesion has ring enhancement in the left temporal lobe on coronal T1-weighed contrast-enhanced MR imaging.


Figure 2
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  		Fig 2. Multiple focal lesions (2 lesions on A and B, 3 lesions on C and D) at contrast-enhanced T1-weighted MR imaging in 4 patients. Note lesions in the basal ganglia (A), frontal lobes (B), cerebellum and temporal lobe (arrows, C) and intraventricular lesions in the lateral ventricles and fourth ventricle (arrow, D).


Figure 3
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  		Fig 3. Disseminated lesions in 3 patients demonstrated at contrast-enhanced MR imaging; axial and coronal images are shown in 1 patient (A and B) and axial images, in 2 patients (C and D).


Figure 4
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  		Fig 4. A, Large chronic partly calcified subdural hematoma on noncontrast CT. B, Another patient has small high-intensity areas within the lesion on noncontrast T1-weighted MR imaging regarded as minor hemorrhage (arrow).


Figure 5
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  		Fig 5. Coronal FLAIR (A) and axial T2-weighted (B) MR images showing diffuse white matter hyperintensity in a patient with isolated intravascular large B-cell lymphoma.





Copyright © 2009 by the American Society of Neuroradiology. Print ISSN: 0195-6108 Online ISSN: 1936-959X