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Posterior fossa pseudotumour due to viral encephalitis in a child
E Unsal1, N Olgun, F Sarialioğlu
1Department of Pediatrics, Dokuz Eylül University Hospital, 35340 Inciralti-Izmir, Turkey.
Pediatric Radiology
|November 5, 1997
Abstract:
A 14-year-old boy had a 1-month history of diplopia (due to a VI nerve palsy), motor ataxia and dizziness. Brain MRI showed a 1.5-cm mass posterior to the pons. Histopathological examination of a biopsy specimen showed the lesion to be of viral origin. After 3 months, the ataxia and dizziness had resolved and the MRI findings returned to normal. By 5 months the abducens paralysis had also resolved. Viral encephalitis should be considered in the differential diagnosis of posterior fossa tumours.