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Extensive haemosiderin deposition coating the brain stem, cerebellar folia and basal cisterns is again identified with associated atrophy which, although stable compared to the last study from last year, it has demonstrated progression since the images from 10 years ago.
The cerebral parenchyma and supratentorial ventricles are unremarkable. No extra-axial collections or mass is evident.
Conclusion: Extensive superficial siderosis in the posterior fossa and base of the brain remains stable. Comparison with previous studies from last year has shown progressive cerebellar and brainstem atrophy along this period.