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Right occipito-parietal extra-axial inhomogeneous mass without penetration of the dura. It elicits isointense signal with internal areas of high signal at T1 WI and low signal at T2 WI , non homogeneous high signal at T2 WI, In diffusion weighted images there was a restriction of diffusion with low signal in the ADC maps.
Significant compression of the right cerebellar hemisphere, brainstem and 4th ventricle. No perifocal cerebral edema suggesting a slow growing tumor.
Subsequent mild/moderate supratentorial ventricular system dilatation is noted.