Cerebellar lipoma: report of a case.

A patient with normal motor and intellectual development suffered headache; especially over the occipital area; and, blurring of vision for five months. Computerized tomography and magnetic resonance imaging of the brain showed a lipoma in the quadrigeminal/superior cerebellar cistern compressing of the aqueduct, inferior colliculus, and vermis. Using the modified sitting position, the tumor was almost totally removed via the infratentorial supracerebellar approach. Postoperative headache and blurring of vision had been improved, but ataxic gait and mild diplopia due to right superior oblique palsy was noted. Ataxic gait was disappeared in half a month and diplopia in two months respectively.