SURGICAL NEUROLOGY, vol.67, no.1, pp.83-88, 2007 (SCI-Expanded)
Background: OSs are extremely rare tumors, most often located in the interpeduncular cistern or the CS. We report an OS located predominantly within the oculomotor cistern, the arachnoid sac that surrounds the nerve for a short distance in the roof of the CS. We discuss a possible growth pattern for cavernous OSs.