Understanding What to Expect: Prognosis
When you or someone you love receives a meningioma diagnosis, one of the first questions that comes to mind is about the future. Understanding what to expect can help you feel more prepared and less anxious about the path ahead.[1]
The outlook for most people with meningioma is generally positive. Most of these tumors are benign, which means they are not cancerous. About 85 to 90 percent of meningiomas fall into this category, classified as Grade 1 tumors that grow slowly over many years.[3][4] These slow-growing tumors often respond well to treatment, with eight out of ten cases being cured.[6]
The remaining 10 to 15 percent of meningiomas are classified as either atypical (Grade 2) or anaplastic (Grade 3). Atypical meningiomas grow more quickly than Grade 1 tumors and have a higher chance of returning after treatment. Grade 3 meningiomas are malignant, meaning they are cancerous, fast-growing, and more likely to spread. These represent only 1 to 3 percent of all meningiomas.[4][5]
The grade of your meningioma significantly influences your prognosis. Grade 1 tumors that are completely removed through surgery often do not return. However, even benign meningiomas can cause serious problems if they grow large enough to press on important parts of the brain or if they are located in areas that are difficult to reach surgically.[3]
Grade 2 and Grade 3 meningiomas have a higher risk of recurrence, meaning they may come back even after treatment. The five-year survival rate for malignant meningiomas ranges from 32 to 64 percent.[5] This doesn’t mean that treatment is ineffective—many people live for many years with proper care and monitoring—but it does mean that ongoing medical attention is essential.
Several factors influence how well someone does after a meningioma diagnosis. The tumor’s location matters greatly. Meningiomas in easily accessible areas can often be removed completely, while those near critical structures like blood vessels or nerves may be more challenging to treat.[3] Your age and overall health also play a role in recovery and treatment options.
An estimated 3,360 people are currently living with high-grade meningiomas in the United States.[4] This number reflects that while higher-grade tumors are rare, there is a community of people managing this condition. Many individuals with meningioma go on to live fulfilling lives, especially with advances in surgical techniques and treatment options available today.
How the Disease Develops Without Treatment
Understanding what happens if a meningioma is not treated helps you appreciate why doctors recommend certain approaches, whether that’s active treatment or careful observation.[1]
Meningiomas are unusual in that they grow from the meninges—the protective membranes that wrap around your brain and spinal cord—rather than from brain tissue itself. They tend to grow inward, pushing on the brain, or outward, sometimes causing the skull to thicken.[7]
The natural course of an untreated meningioma depends heavily on its grade. Grade 1 tumors may grow as slowly as one millimeter per year. At this pace, it could take many years—sometimes decades—before the tumor becomes large enough to cause noticeable symptoms. Some people may never experience problems from their meningioma during their lifetime.[18]
Grade 2 meningiomas grow faster, typically between 3 to 6 millimeters per year. This means symptoms may develop more quickly, and the tumor is more likely to require intervention within a few years of diagnosis.[18]
As a meningioma grows, it begins to occupy more space inside the skull. Because the skull is a closed, rigid structure, there is only so much room available. When a tumor grows large enough, it starts to compress nearby brain tissue, nerves, or blood vessels. This pressure is what causes symptoms to appear.[1]
The symptoms that develop depend entirely on where the tumor is located in the brain. A tumor near the top of the brain might cause headaches or seizures. One growing near the optic nerve could affect vision. A tumor at the base of the skull might interfere with hearing or swallowing.[3]
If left completely untreated, a large meningioma can eventually lead to serious complications. It may block the flow of cerebrospinal fluid—the liquid that cushions the brain—leading to a buildup of pressure inside the skull. This increased pressure can cause worsening headaches, nausea, confusion, and even loss of consciousness.[3]
In some cases, meningiomas can invade surrounding tissues. Grade 2 tumors may grow into nearby bone. Grade 3 tumors are more aggressive and can invade the brain itself or even spread to other organs in the body, although this is rare.[4]
It’s important to remember that not all meningiomas need immediate treatment. Many people are diagnosed with small, slow-growing tumors that can be safely monitored with regular imaging scans. Doctors often recommend this “watchful waiting” approach when the tumor is not causing symptoms and is unlikely to grow quickly.[8]
Possible Complications
Even though most meningiomas are benign, complications can arise depending on the tumor’s size, location, and how it affects surrounding structures. Understanding these potential complications helps you recognize warning signs and seek help when needed.[2]
One of the most common complications occurs when the tumor presses on the brain. This pressure can disrupt normal brain function in various ways. If the tumor irritates the surface of the brain, it can trigger seizures, which are episodes of abnormal electrical activity in the brain. Seizures can range from brief moments of confusion or staring to full convulsions.[6]
If a large meningioma remains untreated, it can lead to severe problems. Memory loss may occur if the tumor affects areas of the brain involved in forming and storing memories. Some people experience personality or behavioral changes, especially if the tumor is located in the frontal part of the brain, which controls judgment, planning, and emotional regulation.[2][9]
Depending on the location, a meningioma can cause paralysis or weakness in parts of the body. Tumors that grow along the top of the brain may affect leg movement, while those in other areas might cause arm weakness. This happens because the tumor compresses the parts of the brain that control muscle movement.[3]
Vision problems are another possible complication. Meningiomas growing near the optic nerve or other vision-related structures can cause blurred vision, double vision, or even blindness in severe cases. Some people notice that their eyes appear to bulge outward if the tumor is located behind the eye socket.[3]
Speech difficulties can develop if the tumor affects areas of the brain responsible for language. This might make it hard to find the right words, understand what others are saying, or speak clearly.[2]
Certain types of meningiomas pose specific risks. Petrous and petroclival meningiomas, which grow at the base of the skull, can affect multiple important nerves. These tumors may interfere with facial sensation, hearing, facial movement, or eye movements. They are among the most challenging meningiomas to treat and should be evaluated by specialists with expertise in skull base surgery.[3]
Posterior fossa meningiomas, which grow at the back of the head, can block the flow of cerebrospinal fluid. This blockage causes fluid to build up, increasing pressure inside the skull. Symptoms of increased pressure include severe headaches (especially in the morning), dizziness, nausea, vomiting, and problems with balance or coordination.[3]
Some meningiomas can affect your sense of smell. Olfactory groove meningiomas grow near the nerve that controls your ability to smell. People with these tumors may gradually lose their sense of smell without realizing it, as the change can be very gradual.[3]
Hearing loss is another complication, particularly with meningiomas that grow near the hearing nerve or inner ear structures. Some people also experience persistent ringing in the ears, known as tinnitus.[2]
Grade 2 and Grade 3 meningiomas carry additional risks because they grow faster and are more likely to invade surrounding tissue. These tumors can spread to other areas of the central nervous system through cerebrospinal fluid, although this is uncommon. Grade 3 meningiomas have irregular cells and may spread to other organs, though this is rare.[4]
Impact on Daily Life
Living with a meningioma affects more than just your physical health. It touches nearly every aspect of daily life, from the simplest tasks to your relationships and emotional well-being. Understanding these impacts can help you prepare and find ways to adapt.[15]
Physical challenges vary greatly depending on the tumor’s size and location. Many people with meningioma experience persistent fatigue, which is different from ordinary tiredness. This type of exhaustion doesn’t improve much with rest and can make even simple activities feel overwhelming. You might find yourself needing to take breaks more often or feeling too tired to participate in activities you once enjoyed.[16]
Headaches are among the most common symptoms affecting daily life. These headaches often feel worse in the morning and may be accompanied by nausea. Some people find that their headaches interfere with work, make it hard to concentrate, or prevent them from sleeping well.[1]
If your meningioma affects areas of the brain controlling movement, you might experience balance problems or weakness. This can make walking difficult and increase the risk of falls. You may need to hold onto furniture or walls when moving around the house. Some people require mobility aids like a cane or walker to move safely.[17]
Cognitive changes can be particularly frustrating. You might notice that you have trouble concentrating, forget things more easily, or take longer to process information. These changes can make it difficult to manage work responsibilities, follow conversations, or complete tasks that require multiple steps.[15]
Vision problems caused by meningioma can affect your ability to drive, read, or watch television comfortably. Double vision or blurred vision makes it hard to judge distances, which is dangerous when driving or navigating stairs. Loss of peripheral vision—seeing to the sides—can make you miss objects or people approaching from the side.[2]
Emotional and psychological impacts are significant. Many people with meningioma experience anxiety about their diagnosis and what the future holds. Depression is also common, particularly when symptoms interfere with independence or the ability to do things you love. The uncertainty of living with a brain tumor—even a benign one—can weigh heavily on your mind.[15]
Your relationships may change as well. You might need to rely more on family members or friends for help with daily tasks. Some people feel guilty about needing assistance or worry about being a burden. Communication can become strained if cognitive or speech problems make it harder to express yourself clearly.[15]
Work life is often affected. Fatigue, headaches, and cognitive changes may make it difficult to maintain your usual productivity. You might need to reduce your hours, take frequent breaks, or adjust your responsibilities. Some people find they need to take extended medical leave or consider disability accommodations.[15]
Hobbies and recreational activities may become limited. If you enjoyed sports or physical activities, balance problems or weakness might prevent you from participating. Visual problems can make reading or crafts difficult. Fatigue can drain your motivation to engage in activities that once brought you joy.[15]
Managing these challenges requires flexibility and creativity. Many people find that breaking tasks into smaller steps makes them more manageable. Planning activities during times when you have the most energy can help you make the most of your good moments. Some people benefit from occupational therapy, which teaches strategies to adapt daily tasks to your current abilities.[21]
Support from others is crucial. Joining a support group, either in person or online, allows you to connect with others who understand what you’re going through. Sharing experiences, tips, and encouragement with others facing similar challenges can reduce feelings of isolation and provide practical advice.[15]
Mental health support is equally important. Working with a psychologist or counselor who specializes in chronic illness can help you develop coping strategies, manage anxiety or depression, and adjust to changes in your life. This support isn’t a sign of weakness—it’s a valuable tool for maintaining your overall well-being.[21]
Support for Family and Understanding Clinical Trials
If someone in your family has been diagnosed with meningioma, you play a vital role in their care and recovery. Understanding what your loved one is experiencing and knowing how to help can make a significant difference in their journey. One important area where families can offer support is in exploring clinical trials, which may provide access to new treatment options.[15]
Clinical trials are research studies that test new ways to prevent, detect, or treat diseases. For meningioma, clinical trials might investigate new surgical techniques, different forms of radiation therapy, new medications, or combinations of treatments. These trials are carefully designed and monitored to ensure patient safety while advancing medical knowledge.[8]
Families should know that participating in a clinical trial is completely voluntary. No one is ever required to join a trial, and patients can leave a trial at any time without affecting their regular medical care. Trials have strict eligibility criteria, which means not everyone will qualify for every study. These criteria are in place to ensure that the trial is safe and that the results will be meaningful.[10]
Before enrolling in a clinical trial, patients and families receive detailed information about the study through a process called informed consent. This includes learning about the purpose of the trial, what procedures will be done, potential risks and benefits, and what alternatives are available. Take time to read this information carefully and ask as many questions as you need until you feel comfortable with your understanding.
Families can help by researching clinical trials together with their loved one. Several online databases list available trials, and your healthcare team can also provide information about studies that might be appropriate. When reviewing potential trials, consider practical factors like location (some trials require travel to specialized centers), time commitment (including how often visits are required), and any costs that might not be covered by insurance.
Prepare for appointments with the research team by writing down questions beforehand. Important questions might include: What is the goal of this trial? What treatment will my loved one receive? What are the possible side effects? How long will the trial last? What happens after the trial ends? Will there be any costs? How will participation affect current treatment plans?
During the trial, families can provide practical support by helping track appointments, organizing medical records, noting any symptoms or side effects, and ensuring medications are taken as prescribed. Keep a notebook or use a smartphone app to record this information—it can be valuable for discussions with the research team.
Emotional support is just as important as practical help. Living with a meningioma and participating in a clinical trial can be stressful. Be there to listen without judgment. Sometimes your loved one may want to talk about their fears or frustrations; other times they may prefer distraction and normalcy. Follow their lead and let them know you’re available whenever they need support.[15]
Families also need to take care of themselves. Caregiving can be physically and emotionally draining. Make sure you’re getting enough rest, eating well, and taking breaks when needed. Don’t hesitate to ask other family members or friends for help. Many cancer centers offer support groups specifically for caregivers, where you can share experiences and learn from others in similar situations.[21]
Understanding the disease helps families provide better support. Learn about meningioma, its symptoms, and treatment options. This knowledge helps you recognize when your loved one needs extra help and allows you to have informed conversations with healthcare providers. Many hospitals and cancer centers offer educational materials and programs for families.
Communication with the healthcare team is essential. Attend medical appointments when possible (with your loved one’s permission). Take notes during these visits, as it can be hard to remember everything discussed. Don’t be afraid to ask for clarification if you don’t understand something—healthcare providers expect and welcome questions.
Be aware of warning signs that require immediate medical attention. These include sudden severe headaches, new seizures, sudden weakness or numbness, difficulty speaking, sudden vision changes, confusion, or loss of consciousness. Know who to contact in these situations—your healthcare team should provide emergency contact information.[1]
Financial concerns often arise during treatment. Clinical trials typically cover the costs of the experimental treatment and related tests, but other expenses may not be covered. Social workers at the treatment center can help navigate insurance issues, identify financial assistance programs, and connect you with resources for transportation or lodging if travel is required.
Remember that everyone’s experience with meningioma is different. What works for one family may not work for another. Be patient with yourselves as you navigate this journey together, and celebrate small victories along the way.
