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Large well defined cystic lesion with small soft tissue nodule is seen implicating the left cerebellar hemisphere measuring about 4 x 5 x 3 cm exhibiting hypointense signal in T1WI and FLAIR and hyperintense signal in T2WI, the soft tissue nodule showing homogeneous post contrast enhancement while the cystic component showing no enhancement , the lesion exerting mass effect upon the 4th ventricle with subsequent minimal dilatation of the supratentorial ventricular system.
A young adult with MRI findings suggestive of left cerebellar hemangioblastoma. The main differential is that of a pilocytic astrocytoma.