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What should you know about meningioma?

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A meningioma is a tumor that forms on membranes that cover the brain and spinal cord just inside the skull. Specifically, the tumor forms on the three layers of membranes that are called meninges. These tumors are often slow-growing. As many as 90% are benign (not cancerous). Most meningiomas occur in the brain, but they can also grow on parts of the spinal cord. Often, meningiomas cause no symptoms and require no immediate treatment, but the growth of benign meningiomas can cause serious problems. In some cases, such growth can be fatal. Meningiomas are the most common type of tumor that originates in the central nervous system. They occur more often in women than in men. Some meningiomas are classified as atypical. These are not considered either benign or malignant (cancerous). But they may become malignant. A small number of meningiomas are cancerous. They tend to grow quickly. They also can spread to other parts of the brain and beyond, often to the lungs.

From: Meningioma WebMD Medical Reference

SOURCES:

Cedars-Sinai: "Meningiomas Brain Tumors."

Brigham and Women's Hospital: "Facts about Meningiomas."

Johns Hopkins Medicine web site: "Grades of Meningioma," "Stereotactic Radiosurgery," "What Is a Meningioma?" "Types of Meningioma," "Diagnosis of Meningioma," "Treatment of Meningioma."

American Academy of Neurological Surgeons: "Meningiomas."

Medscape: "Pathophysiology."

UCLA Health System web site: "What Is a Meningioma?"

Reviewed by Laura J. Martin on July 14, 2017

SOURCES:

Cedars-Sinai: "Meningiomas Brain Tumors."

Brigham and Women's Hospital: "Facts about Meningiomas."

Johns Hopkins Medicine web site: "Grades of Meningioma," "Stereotactic Radiosurgery," "What Is a Meningioma?" "Types of Meningioma," "Diagnosis of Meningioma," "Treatment of Meningioma."

American Academy of Neurological Surgeons: "Meningiomas."

Medscape: "Pathophysiology."

UCLA Health System web site: "What Is a Meningioma?"

Reviewed by Laura J. Martin on July 14, 2017

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What are the causes and risks factors of meningioma?

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THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. It is intended for general informational purposes only and does not address individual circumstances. It is not a substitute for professional medical advice, diagnosis or treatment and should not be relied on to make decisions about your health. Never ignore professional medical advice in seeking treatment because of something you have read on the WebMD Site. If you think you may have a medical emergency, immediately call your doctor or dial 911.

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