An estimated 66,240 people in the United States are currently living with brain tumors. Most of these individuals are adults. The purpose of this first edition American Association of Neuroscience Nurses' Clinical Practice Guideline is to summarize what is currently known about brain tumors in adults and to provide the reader with nursing-specific recommendations based on supporting evidence from nursing and other disciplines. Care of the Adult Patient With a Brain Tumor includes information on epidemiology, classification of brain tumors, pathophysiology, clinical features, diagnostic tests, surgical management, radiation therapy, chemotherapy, symptom management, psychosocial and educational needs of the patient and family, and survivorship and end-of-life care.