meningiomat

Meningioma is a type of tumor that arises from the meninges, the protective membranes covering the brain and spinal cord. It is the most common primary intracranial tumor, accounting for approximately 30% of all brain tumors. Meningiomas are generally benign, meaning they do not invade surrounding tissues or spread to other parts of the body. However, they can grow large enough to cause symptoms by pressing on nearby structures.

Meningiomas can occur at any age but are most common in adults between the ages of 40 and 60. They are more frequent in women than in men. The exact cause of meningiomas is unknown, but they are thought to develop from the meningothelial cells that line the meninges. These tumors can be sporadic or associated with certain genetic syndromes, such as neurofibromatosis type 2.

Symptoms of meningiomas depend on their location and size. Common symptoms include headaches, seizures, vision problems, and neurological deficits. Diagnosis typically involves imaging studies such as magnetic resonance imaging (MRI) and computed tomography (CT) scans. Treatment options vary depending on the size, location, and symptoms of the tumor. Small, asymptomatic tumors may be monitored with regular imaging. Larger or symptomatic tumors may require surgical removal, radiation therapy, or a combination of both. In rare cases, surgical intervention may be necessary to prevent complications such as increased intracranial pressure or neurological deficits.