Department of Neurosurgery;
Changgung Hospital;
Medical Center;
Tsinghua University;
Department of Nephrology;
Beijing Luhe Hospital;
Capital Medical University;
Department of Psychiatry;
Zaozhuang Mental Health Center;
Department of Neurosurgery;
The Fifth People's Hospital of Datong;
Regional Medical Center of Shanxi Province;
intramedullary schwannoma; literature review; magnetic resonance imaging; spinal cord;