Department of Orthopaedic Surgery;
Tokai University Hachioji Hospital;
Tokyo;
Japan;
Yamato Orthopaedic Clinic;
Kanagawa;
Japan;
Department of Orthopaedic Surgery;
Ebina General Hospital;
Kanagawa;
Japan;
Department of Orthopaedic Surgery;
Tokai University School of Medicine;
Kanagawa;
Japan;
Mobile; Tumor; Schwannoma; Intraoperative; Myelography; Cauda; Equina;