Fig. 1

Preoperative imaging examination: A-B preoperative cervical anterior and lateral X-ray films; C-G preoperative CT showed that space occupying in spinal canal and left anterior bone destruction could be seen at cervical 2 level; The sagittal plane of MRI before H-K showed that space occupying in spinal canal could be seen at cervical 2–3 level, and it was dumbbell-shaped in cross section; L Preoperative CTA showed that the left vertebral artery was obviously compressed by tumor