A 20-year old female presented with progressively increasing holocranial headache, unsteadiness of gait, and visual obscuration of 2 months duration. Right ventriculoperitoneal (VP) shunt for signs of raised intracranial pressure had been done by the referring neurosurgeon. Neurological examination revealed papilledema and right-sided cerebellar signs. Skull examination revealed an irregular bony hard immobile swelling 3 cm lateral to the inion on the right involving the occipital bone. Plain computerized tomography (CT) demonstrated a hyperdense-calcified lesion in the posterior fossa contiguous with the occipital bone displacing the right cerebellar hemisphere and the fourth ventricle with obstructive hydrocephalus [Figure 1a].
展开▼
