Ataxia and intention tremor.
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A well defined hyperintense mass with flow signal void is demonstrated in the right cerebellar hemisphere. The mass is isointense with flow voids and linear hyperintense signal of blood components. The mass shows dense contrast enhancement. Note the tonsillar herniation. The 4V was displaced anteriorly with signs of obstructive hydrocephalus.
Her general examination didnot reveal any sign of Von-Hipple-Lindau syndrome. Surgery and histology confirmed that the lesion represented a haemangioblastoma.
Haemangioblastomas are the most common posterior fossa mass in a young adult patient, and typically have prominent enhancement and flow voids.