Though they’re typically benign, without treatment, parasagittal meningioma tumors may still cause life threatening symptoms like seizures of increased pressure on the brain.

A meningioma is a tumor that grows in the areas around your brain and spinal cord. A parasagittal meningioma grows into at least one wall of your superior sagittal sinus.

The superior sagittal sinus is a vessel that begins behind your eyes and helps transport blood to your brain.

Most parasagittal meningiomas are benign, but they can still cause symptoms and require treatment.

The exact cause of parasagittal meningiomas is usually unknown. However, there are some risk factors linked to someone having a higher likelihood of developing a parasagittal meningioma.

Risk factors include:

  • Previous radiation treatment: If you’ve been treated with radiation in the past, it can increase your risk of developing parasagittal meningioma.
  • Being a woman: Meningiomas are more common in women than in men. There may also be a link between breast cancer and the risk of meningioma.
  • Birth control and other hormonal medications: There may be a link between taking estrogen-based hormonal medications and an increased risk of parasagittal meningioma, but further research is still needed.
  • Obesity: Obesity is a risk factor for several types of cancer. There also seems to be a link between having obesity and the risk of parasagittal meningioma, but the exact relationship isn’t fully understood.

The symptoms of a parasagittal meningioma can develop slowly. You might not notice any symptoms at first.

When symptoms do occur, they can include:

How serious is a parasagittal meningioma?

Parasagittal meningiomas are typically benign and noncancerous, but not always.

It’s rare, but some parasagittal meningiomas are aggressive, fast-growing, and cancerous. Even benign parasagittal meningiomas can become dangerous without treatment. Large parasagittal meningiomas can cause severe symptoms and can be fatal.

Doctors assign classifications called grades to parasagittal meningiomas to describe how fast they’re growing. These grades include:

  • Grade one: These are benign and slow-growing tumors. They’re the most common type of parasagittal meningioma and are the easiest to treat.
  • Grade two: Grade two meningiomas aren’t classified as benign or cancerous. They can be harder to treat than grade one.
  • Grade three: These parasagittal meningiomas are aggressive and fast-growing. They’re the rarest type and can be challenging to treat.
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There are a few treatment options available for parasagittal meningiomas. The best one for you will depend on factors such as the size and grade of your meningioma, your age, your symptoms, and your overall health.

Treatment options can include:

  • Surgery: Surgery to remove the meningioma is a common treatment option. However, because parasagittal meningiomas grow into vessels, surgery can be challenging. You might need to have a treatment such as radiation before surgery to help improve outcomes.
  • Radiation: Radiation can shrink tumors and stop tumor growth. You might have it if surgery isn’t an option or in addition to surgery.
  • Observation: Not everyone with a parasagittal meningioma needs to have treatment right away. For people with very small tumors that aren’t causing symptoms, observation can be a better option. This can allow doctors to closely monitor for any changes.
  • Chemotherapy: Chemotherapy isn’t normally part of the treatment for parasagittal meningiomas, but it’s an option for some people. If a parasagittal meningioma isn’t responding to other treatments or has come back after other treatments, chemotherapy may be a good choice.
  • Clinical trials: Clinical trials test options such as immunotherapy or targeted therapy. Your doctor can help you decide if you’re a good candidate for one.

Your coverage and the costs of treatments for parasagittal meningioma will vary depending on factors such as your specific insurance plan, your location, and the exact treatments your doctor orders.

You can start planning for possible costs by looking for parasagittal meningioma under its ICD-10 code: 32.0. This code is how treatments are billed to your insurance company.

Many plans have this information online. For instance, Medicare offers this online lookup tool for outpatient procedures. If your insurance plan doesn’t have an online tool, you can often get the information you need by calling them.

If you don’t have coverage, our guide to getting healthcare without insurance can help you find ways to get parasagittal meningioma care.

Parasagittal meningioma is a tumor that grows into a vessel that transports blood to your brain.

Most parasagittal meningiomas are benign and slow-growing, but a small percentage are aggressive and cancerous. As parasagittal meningiomas grow larger, they can cause symptoms such as headaches, seizures, and visual difficulties.

Treatment can be necessary even when tumors are benign, and common options include radiation and surgery.