Presentation
3 months of progressive headache. No past medical history.
Patient Data
Largely cystic posterior fossa mass, centered on the vermis, with a small foci of high density within.
Effaced 4th ventricle with a resultant biventricular hydrocephalus.
Several further small cystic foci in the right cerebellar hemisphere and adjacent to the right temporal horn.
Largely cystic posterior fossa mass, centered on the vermis, with a small solid focus and susceptibility artifact.
Effaced 4th ventricle with a resultant biventricular hydrocephalus. No transependymal edema.
Several further small cystic foci in the right cerebellar hemisphere and adjacent to the right temporal horn.
Case Discussion
Surgical biopsy identified a pilocytic astrocytoma. By far the most likely location is in the cerebellum ( more than 50% ).
Although one of the commonest posterior fossa tumors in a teenager/young adult, it is uncommon to have mutlifocality as in this case.
It is not a primary brain tumor recognized for multifocality of CSF seeding unlike others, such as medulloblastoma.
Unable to process the form. Check for errors and try again.