Posterior fossa tumor in a 12 year-old boy.

Cerebellar glioblastoma multiforme (GBM) has rarely been reported in children. We report a case of a 12-year-old child complaining of right upper limb tremor, loss of the normal capacity to modulate fine voluntary movements with right hand and headache, lasting for over a month. Radiological studies (CT and MRI) revealed a lesion of the right cerebellar hemisphere. The tumor was surgically excised and the histological examination revealed the presence of a GBM. The differential diagnosis of the lesions in the posterior fossa should include GBM. A gross total resection should be always attempted in order to achieve a better clinical outcome, although nearly all of these tumors recur.