3Barwick K W, Huvos A G, Smith J.Primary osteogenic sarcoma of the vertebral column : a clinical pathologic correlation of 10 patients[J]. Cancer, 1980, 46(3) : 595-604.
4Beer S J, Menezes A H.Primary tumors of the spine in children : natural history, management, and long term follow-up[J].Spine(PhilaPa 1976), 1997, 22(6) : 649-659.
5Boriani S, Weinstein J N.Differential diagnosis and surgical treatment of primary benign and malignant neoplasms.In : Frymoyer JW, ed. the Adult Spine : Principles and Practice[M].2nd edition.Philadelphia : Lippincott- Raven Publishers, 1997 : 951-987.
