Case Western Reserve University, Cleveland, OH. Critical review of current state-of-the-art techniques in endoscopic neurosurgery, stereotactic neurosurgery, stereotactic radiosurgery, endovascular therapy, and minimally invasive spinal surgery. MoreCase Western Reserve University, Cleveland, OH. Critical review of current state-of-the-art techniques in endoscopic neurosurgery, stereotactic neurosurgery, stereotactic radiosurgery, endovascular therapy, and minimally invasive spinal surgery.