The main locations for meningioma are:
Meningiomas are often slow-growing, low-grade tumors. They usually are benign tumors, but a malignant form exists. Meningiomas usually occur as single tumors, but it is possible for a multiple meningioma to develop.
Meningioma; light gray area, upper left
Meningiomas may be classified using the World Health Organization (WHO) grading system (below).
Benign, meningothelial, fibrous. Grade I meningioma have distinct borders. It may be asymptomatic.
78% to 81%
Choroid, atypical. Grade II meningiomas may be more invasive, grow faster, and have a greater tendency to recur even if removed. It may or may not be cancerous.
15% to 20%
Anaplastic (lack of cell differentiation), malignant. Grade III meningiomas are cancerous tumors that tend to invade adjacent brain tissue. This grade of meningioma is relatively rare.
1% to 4%
Currently, there are 170,000 people in the United States with meningioma.
Meningiomas may not produce any symptoms until the tumor grows quite large. Symptoms include headaches, seizures, behavior or personality changes, confusion, drowsiness, hearing loss, muscle weakness, nausea, vomiting, visual disorders and progressive neurological deficits. Symptoms are related to the specific location of the tumor.
At the Piedmont Brain Tumor Center, diagnosis is made after a thorough physical examination, neurological study, and patient history has been conducted. In most instances, the presence and location of the tumor will be determined by a computed tomography (CT) or magnetic resonance imaging (MRI) scan. In some cases, it may be important to obtain a biopsy of the tumor tissue to help diagnose it. A biopsy involves surgically removing a tiny amount of the tumor for laboratory analysis. In some cases, a lumbar puncture (spinal tap) may be ordered to analyze the cerebrospinal fluid (CSF).
The Piedmont Brain Tumor Center team discusses treatment options on an individual treatment basis, since there are many factors that influence optimal therapeutic choices. Treatment of a meningioma may be based, in part, by the size of the tumor and/or whether or not it is causing symptoms. In cases of a small asymptomatic tumor, close clinical monitoring may be ordered with no other medical intervention.
Meningiomas are slow-growing tumors, often benign, that occur in the meninges or lining of the skull. They may be asymptomatic at first. Symptoms are related to the location and size of the tumor. Depending on the tumor size, grade and whether or not it produces symptoms, treatment may be medical monitoring or surgery.