[An application of posterior cervical and transoral approaches to treating primary malignant osseous tumors in craniovertebral junction].

To investigate the surgical method for primary malignant osseous tumors in the craniovertebral junction (CVJ) and its effectiveness.The clinical data of 7 patients with primary malignant osseous spinal tumors in CVJ, which collected between September 2010 and April 2019, were retrospectively analyzed. There were 5 males and 2 females, aged 23 to 75 years (median, 56 years). All patients were diagnosed as chordoma in 4 cases, plasmacytoma in 2...