Dr. St. Clair is Assistant Professor, Department of Neurosurgery, Temple University School of Medicine, Philadelphia, PA; and Dr. DeMonte is Professor and Mary Beth Pawelek Chair in Neurosurgery, Department of Neurosurgery—Unit 442, The University of Texas M.D. Anderson Cancer Center, 1515 Holcombe Blvd., Houston, TX 77030; E-mail: [email protected].

Dr. St. Clair has disclosed that he has no significant relationships with or financial interests in any commercial organizations pertaining to this educational activity. Dr. DeMonte has disclosed that he is a consultant/advisor to Medtronic, Inc.

All editors and staff in a position to control the content of this CME activity and their spouses/life partners (if any) have disclosed that they have no financial relationships with, or financial interests in, any commercial companies pertaining to this educational activity.

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Category: Tumor

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Lippincott Continuing Medical Education Institute, Inc. designates this educational activity for a maximum of 1.5 AMA PRA Category 1 Credits™. Physicians should only claim credit commensurate with the extent of their participation in the activity. The American Association of Neurological Surgeons attests that this educational activity has been recognized for co-sponsored/endorsement for 1.5 Category 1 CME credits of the American Association of Neurological Surgeon's Continuing Education Award in Neurosurgery. To earn CME credit, you must read the CME article and complete the quiz and evaluation on the enclosed form, answering at least 70% of the quiz questions correctly. This activity expires on December 30, 2010.