Placement of cesium-131 permanent brachytherapy seeds using the endoscopic endonasal approach for recurrent anaplastic skull base meningioma: case report and technical note. - Shafiq AR; Wernicke AG; Riley CA; Morgenstern PF; Nedialkova L; Pannullo SC; Parashar B; Magge R; Schwartz TH (Journal of neurosurgery, 2019)