What it is and when it causes symptoms
It grows from the membranes (meninges) and can press on the neighboring brain. Symptoms depend on location: headache, seizures, weakness, visual changes or memory problems. Most small meningiomas are asymptomatic and found incidentally on an MRI done for another reason.
Surveillance or treatment?
For a small, asymptomatic meningioma, follow-up with periodic MRI is often the right choice. Treatment is considered when the tumor causes symptoms, grows, or presses on critical structures. Size alone does not decide — what matters is whether it causes symptoms and how much it presses on the brain.
Surgery and Gamma Knife
When treatment is needed, microsurgical removal aims for complete resection while protecting surrounding structures; neuronavigation and the microscope improve precision. For small tumors or those in hard-to-operate areas, radiosurgery (Gamma Knife) can be an alternative or complement.
After treatment
After complete removal most patients do well; they are followed with control MRIs because a portion can recur over the years. The follow-up plan is set according to the tumor's pathological grade.