74 y/o F progressive dysarthria, dysphagia.


CT
noncontrast
12/18/2008
12/29/2008


Axial
FLAIR
12/30/2008
Axial T1 post Gad 12/30/2008


DWI
ADC map

MRS TE=270

MR perfusion CBV map
Findings:
Multiple enhancing mass lesions with increased choline and restricted diffusion and minimally decreased perfusion.
DDX:
Metastases, abscesses, lymphoma, demyelination
Diagnosis:
CSF analysis shows large cell B cell lymphoma.
Discussion:
Lymphoma with high cellularity may show restricted diffusion and iso or slightly decreased perfusion.
Submitted by Paritosh Khanna, MD, UW Neuroradiology Fellow
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