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MRI demonstrates the large mass to distort the left frontal lobe, with intervening pockets of fluid which do not fully attenuate on FLAIR. The sulci, especially superiorly, demonstrate high signal also on FLAIR. Contrast enhancement is seen at the margins of the mass as well as faintly involving the leptomeninges.
Surprisingly the air containing cavity does not have significant enhancement, nor does the fluid within it restrict on DWI, and as such it does not represent an established abscess.