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Primary Spinal Cord Tumors: Part I—Extradural and Extramedullary Tumors

P rimary spinal cord neoplasms represent an uncommon but important cause of back pain and/or neurologic deficit in adults and children. Epidemiologic studies suggest that primary spinal tumors occur with an approximate annual incidence of 2 per 100,000 population; the incidence has risen recently with the increased use of MRI.1 Because of their rarity and nonspecific clinical presentation, a high index of suspicion is paramount for timely diagnosis. Despite the wide histologic variety of neoplasms, primary tumors of the spinal cord can be easily classified according to anatomic location. In this article, the epidemiology, clinical and radiographic findings, and prognosis of the nonosseous primary tumors of the spinal cord will be reviewed.