Series Editor: Arthur T. Skarin, MD, FACP, FCCP
Primary central nervous system tumors are relatively rare, but they can cause significant morbidity. They are also among the most lethal of all neoplasms. Brain tumors are the second most common cause of death due to intracranial disease, second only to stroke. The estimated annual incidence of primary brain tumors is approximately 21 per 100,000 individuals in the United States. The incidence of brain tumors varies by gender, age, race, ethnicity, and geography and has increased over time. Gliomas and germ cell tumors are more common in men, whereas meningiomas are twice as common in women. The only validated environmental risk factor for primary brain tumors is exposure to ionizing radiation.
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