Department of Orthopedic Surgery;
Juntendo University School of Medicine 2-1-1 Hongo;
Tokyo;
Japan;
Department of Human Pathology;
Juntendo University School of Medicine 2-1-1 Hongo;
Tokyo;
Japan;
Dumbbell Meningioma; Spinous Process Preservation; Cervical Spine; Spinal Tumor; Spinal Surgery;