Headaches that feel “off,” vision that seems a little blurrier than usual, a new seizure, or an MRI report that mentions a “mass” can stop you in your tracks. Even when a tumor is commonly noncancerous, the uncertainty is stressful—and the next steps are rarely obvious from the radiology report alone.
This guide explains what a meningioma is, how it can affect the brain and nerves, which symptoms are most common, and how doctors decide between monitoring, radiation, and surgery. If you’re researching meningioma treatment in Los Angeles, the goal is to help you understand what questions to ask at your visit and what a thoughtful plan can look like.
What Is a Meningioma?
A meningioma is a tumor that forms from the meninges—the thin protective membranes that cover the brain and continue down around the top portion of the spinal cord. Unlike many other brain tumors, meningiomas do not start in brain tissue itself. They arise from the lining around the brain, which is why their effects often come from pressure on nearby structures rather than from invading brain tissue.
Meningiomas can occur in different locations, including along the upper or outer surface of the brain and at the base of the skull. Less commonly, they can develop along the spinal canal. Location matters because it influences what symptoms you notice and how complex treatment planning may be.
For a broader overview of how brain tumors are evaluated and treated, visit our brain tumor treatment page.
How Meningiomas Grow and Why They Cause Symptoms
Many meningiomas are slow-growing. Some are discovered only after they reach a size where they start to cause symptoms, while others are found incidentally when imaging is done for unrelated reasons.
As a meningioma enlarges, it typically grows inward, taking up space and pressing on the brain, nearby cranial nerves, or blood vessels. This “mass effect” is what drives many symptoms. In practical terms, the same tumor type can feel very different depending on where it sits—pressure near vision pathways can affect eyesight, while pressure near motor areas can contribute to weakness.
Imaging may also describe internal characteristics such as cystic (fluid-filled) components, calcifications (mineral deposits), or prominent blood vessels. These features help specialists understand what they are seeing and plan next steps, but they do not replace a full clinical evaluation.
Common Symptoms and Warning Signs
Meningioma symptoms vary based on the tumor’s size, location, and the structures being compressed. Some people have no symptoms at all, while others notice subtle changes that gradually become harder to ignore.
Symptoms may include:
- Headaches that persist, worsen over time, or feel different from your usual pattern
- Vision changes such as blurriness or difficulty seeing to one side
- Weakness in the face, arm, or leg
- Numbness or tingling
- Balance or coordination problems
- Seizures
- Changes in memory, concentration, or personality in some cases
Because these symptoms can also come from other conditions, the most helpful next step is correlating your symptoms with high-quality imaging and a specialist’s review—rather than trying to interpret a scan report in isolation.
Are Meningiomas Benign or Cancerous?
Most meningiomas are benign (noncancerous). Malignant meningiomas are uncommon. That said, “benign” does not automatically mean “harmless.” Even a benign meningioma can cause serious problems if it presses on critical brain regions, cranial nerves, or the spinal cord.
The source material notes that meningiomas account for over 36% of all brain tumors and are most commonly found in females between ages 30 and 50. While population trends never predict an individual course, they help explain why meningiomas are a frequent diagnosis in neurosurgical practice.
In real-world decision-making, the most important considerations usually include:
- Where the tumor is located and what it’s touching
- Whether it is stable or showing signs of growth over time
- Whether symptoms match what the tumor could reasonably cause
- How safely the tumor can be treated based on your anatomy and overall health
What Causes a Meningioma?
In many cases, there is not a single clear cause. The source article notes that genetic factors (including damaged chromosomes) and radiation exposure can contribute to meningioma development. For many patients, a meningioma is discovered without any known trigger or identifiable event.
If you have been diagnosed, it can help to shift the focus from “Why did I get this?” to “What does this tumor mean for my function and safety, and what approach fits the situation right now?” That’s where a detailed imaging review and clinical exam become meaningful.
How Meningiomas Are Diagnosed
Meningiomas are typically identified with imaging—most often an MRI of the brain, and sometimes a CT scan. These studies show the tumor’s size, exact location, and features that can influence treatment planning.
A careful evaluation also includes a focused neurological exam and a symptom review. Not every meningioma needs immediate intervention, and not every symptom is necessarily caused by the meningioma—so matching the imaging findings to your day-to-day experience is a key part of building a plan.
You can also explore our brain conditions hub for related topics and common reasons patients seek a neurosurgical evaluation.
Meningioma Treatment Options: Observation, Radiation, and Surgery
Treatment is tailored to the individual. Factors such as your symptoms, tumor size and location, and whether the meningioma appears to be growing over time all shape the recommendation. When appropriate, care is often approached step-by-step—starting with the safest option that addresses the problem.
Observation (Active Monitoring)
Because many meningiomas grow slowly, observation with scheduled follow-up imaging may be recommended when the tumor is small, not causing symptoms, or appears stable. Monitoring can also be reasonable when a tumor’s location makes treatment higher risk and the meningioma is not currently threatening neurological function.
Radiation Therapy
Radiation may be considered when the tumor is in a location where surgery carries higher risk, when the tumor shows growth, or when a portion of tumor remains after surgery and additional control is recommended. The goal is to slow or stop growth—not necessarily to remove the tumor.
Surgery
Surgery may be recommended when a meningioma is causing significant symptoms, showing growth, or placing concerning pressure on the brain, cranial nerves, or spinal cord. In many cases, the surgeon removes a section of skull to access the tumor and then replaces it at the end of the operation. This approach is commonly referred to as a craniotomy.
Learn more about craniotomy for brain tumor resection and how it may be used when removal is the most appropriate option.
Depending on the tumor’s location and the safest surgical corridor, some patients may be candidates for minimally invasive brain tumor surgery, which can reduce disruption to surrounding tissues when anatomy allows.
When to See a Neurosurgeon
If you’ve been told you have a meningioma—or you have symptoms that could be consistent with one, such as persistent headaches, new or worsening vision changes, seizures, or unexplained weakness—it’s reasonable to schedule an evaluation with a neurosurgeon who routinely treats brain tumors.
Seek urgent medical attention if you experience a first-time seizure, sudden severe headache, sudden one-sided weakness or numbness, trouble speaking, or abrupt vision loss.
For meningioma-specific next steps, visit our pages on meningioma treatment and meningioma surgery.
Finding Meningioma Treatment in Los Angeles at Yashar Neurosurgery
When the diagnosis is a brain tumor—even a commonly benign one—patients usually want the same things: clear explanations, a plan that fits the details of their imaging, and a recommendation that balances effectiveness with safety. At Yashar Neurosurgery, Parham Yashar, MD reviews your MRI or CT in detail, connects the findings to your symptoms and exam, and talks through appropriate options, which may include monitoring, radiation, or surgery.
If you’re looking for the best brain surgeon Los Angeles patients turn to for straightforward answers and careful surgical judgment, we invite you to schedule a consultation. Call (424) 209-2669 or visit 8436 W. 3rd Street, Suite 800, Los Angeles, CA 90048.
