A 72 year old woman with known systemic lymphoma presented with confusion, poor memory and a left hemiparesis.

(Left, Middle): T1-weighted axial with gadolinium; (Right) T2 axial. Note the large enhancing mass involving the frontal lobe and the basal ganglia (especially the caudate) with surrounding edema. Biopsy confirmed metastatic lymphoma.

Revised 05/16/06.
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