Centred in the medial aspect of the left cerebellar hemisphere, there is a mixed solid and cystic mass. The solid component is located medially and enhances vividly and homogeneously. There is a cystic component superiorly within the cerebellum, as well as inferiorly, extending as far as the upper cervical spinal cord. The cystic component is located posterior to the cord here, and there is mild flattening of the cord.
There is peripheral enhancement of the cystic component of the mass. The solid component demonstrates homogeneous T2 hyperintensity. There are no flow void is identified.
There is mild surrounding vasogenic oedema. The mass compresses the fourth ventricle, and there is obstructive hydrocephalus with evidence of mild transependymal CSF flow.