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What is your impression after the MRI?
Features are those of a low-grade glioma (i.e. diffuse astrocytoma).
Correlating to the low density on CT brain, centred at the posterior-most aspect of the left superior frontal gyrus, is a moderate-sized area of FLAIR intensity involving and expanding cortex and with local mass-effect. The abnormal signal extends posteriorly to the precentral gyrus mainly medial to the hand knob. They are small foci of FLAIR hypointensity in and no definite enhancement. Only small area of mild diffusion restriction is present. MRS demonstrates mild reversal of the choline-creatine peak and mildly reduced NAA. No increased CBV. No susceptibility. Equivocal overlying bony remodelling. Paranasal sinus mucosal disease.