Meningiomas
Meningiomas
Meningiomas (/mɛnɪnˈdʒiːoʊməz/; singular: meningioma) are a type of tumor that develops from the meninges, the protective layers of tissue that surround the brain and spinal cord. The term "meningioma" is derived from the Greek words "meninx" (meaning membrane) and "-oma" (meaning tumor).
Classification
Meningiomas are classified by the World Health Organization into three grades based on their likelihood of becoming cancerous. These include:
- Grade I: These are the most common type and are usually benign.
- Grade II: These are atypical meningiomas that have a higher risk of becoming cancerous.
- Grade III: These are malignant meningiomas and are the most aggressive.
Symptoms
The symptoms of meningiomas can vary depending on their location and size. Common symptoms include headache, seizure, and changes in vision or personality.
Diagnosis
Meningiomas are typically diagnosed through imaging tests such as MRI or CT scan. In some cases, a biopsy may be performed to confirm the diagnosis.
Treatment
Treatment options for meningiomas include surgery, radiation therapy, and chemotherapy. The choice of treatment depends on the grade of the tumor, its location, and the patient's overall health.
Prognosis
The prognosis for individuals with meningiomas varies widely. Many people with benign meningiomas live normal lives after treatment. However, malignant meningiomas can be life-threatening.
See also
References
External links
- Medical encyclopedia article on Meningiomas
- Wikipedia's article - Meningiomas
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