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Fairly well defined intra axial mass lesion is seen in left cerebellar hemisphere. T1 hypointense, heterogeneously T2 hyperintense with no definite restriction on DWI images. Heterogeneously enhances in post contrast study. Accompanying left cerebellar, vermian, left middle cerebellar peduncle edema with mild compression of fourth ventricle. No significant upstream ventricular dilatation of any ascending trans tentorial herniation. No tonsillar herniation. No other infra or supratentorial intra or extra axial mass lesions. No abnormal meningeal enhancement.