Presentation
Delayed milestones, V-P shunt insertion.
Patient Data
Large extra-axial cystic space occupying lesion in posterior fossa, retrocerebellar, appears hypointense in T1W, hyperintense in T2WI, exhibits CSF signal intensity in FLAIR sequences, not restricted diffusion in DW/ADC. compressing the cerebellum, pushing it anteriorly, elevating tentorium, subsequently attenuated IVth ventricle, superior cerebellar cistern and prepontine cistern.
and causes bone remodeling of skull bone.
Asymmetry of ventricular system, with V-P shunt, its tip in left lateral ventricle, which is seen collapsed.
Hyperintensity signal in T2W and FLAIR sequences of white matter of frontoparietal lobes, periventricular region, involving the corpus callosum, leukodystrophy.
Case Discussion
Large retrocerebellar cyst of CSF signal intensity, not restricted diffusion, likely arachnoid cyst, causes supratentorial hydrocephalus, and V-P shunt is inserted.
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