What Is a Benign Brain Tumor? Symptoms and When to See a Doctor

A brain tumor diagnosis can feel overwhelming. But not all brain tumors are cancerous. Many are benign, meaning they don’t spread to other parts of the body. Even so, they can still affect how the brain works and should never be ignored, experts with Baptist Health Brain & Spine Care caution.

“We want patients to understand that ‘benign’ doesn’t always mean ‘harmless,’” says neurosurgeon Matthew Moore, M.D., director of integrated neurosurgery at Marcus Neuroscience Institute at Boca Raton Regional Hospital, part of Baptist Health. “Because the brain is such a delicate and confined space, even a slow-growing tumor can impact important functions.”

Understanding Benign Brain Tumors

A benign brain tumor is simply a noncancerous growth of abnormal cells in or around the brain. These tumors typically grow slowly and are less likely to invade nearby tissue compared to malignant tumors.

Still, their location matters.

“What really determines the impact of a benign brain tumor is where it sits. Even benign tumors can affect vision, hormone balance or movement if they press on critical areas of the brain,” Dr. Moore explains.

How They Differ From Malignant Tumors

The main distinction between benign and malignant tumors lies in their behavior:

• Benign tumors grow slowly and do not spread
• Malignant tumors are cancerous and can grow more aggressively

However, both types of tumors can cause symptoms by putting pressure on the brain. Which is why neurosurgeons look “beyond the label” and seek to understand every aspect of the patient’s particular tumor type.

Armed with information gathered from the most advanced diagnostic tools available in the region, they look at how the tumor is behaving and how it’s affecting the patient. “That guides every single one of our treatment decisions,” Dr. Moore says.

Different Types of Benign Brain Tumors

Clinically, doctors often refer to benign brain tumors as ‘nonmalignant’ tumors or describe them by their specific type. There are several different types of benign brain tumors, the most common of which in adults is meningioma. According to Dr. Moore, this tumor develops not in the brain itself but in the meninges, the protective layers of tissue that surround the brain and spinal cord.

Other common types of benign brain tumors include pituitary adenoma, which forms in the pituitary gland, a small structure at the base of the brain that controls hormone production, and Schwannoma, or acoustic neuroma. This develops from Schwann cells, which form the protective covering, or sheath, around nerves responsible for hearing and balance, says Dr. Moore.

How Common Are Benign Brain Tumors?

According to neurosurgeon Evan Bander, M.D., director of endoscopic skull base surgery at Baptist Health Miami Neuroscience Institute, benign brain tumors are actually more common than malignant brain tumors. Thousands are diagnosed in the U.S. each year, and many people live with them for years—sometimes without symptoms.

“We often discover these tumors incidentally,” Dr. Bander says. “Then, the important questions become, ‘Is it causing symptoms?’ and ‘Is it likely to grow?’ Knowing this—and knowing exactly what to do next—is where specialized care makes a real difference.”

Who’s at Risk?

Benign brain tumors can affect anyone but the risk may be higher with:

• Increasing age
• Certain genetic conditions
• Prior exposure to radiation

In many cases, however, there is no clear cause.

“That uncertainty can be unsettling for patients,” Dr. Bander acknowledges. “But what’s reassuring is that we have advanced tools to detect and monitor these tumors early.”

Symptoms to Watch For

Symptoms vary depending on the tumor’s size and location and often develop gradually. Common signs of a benign brain tumor can include:

• Persistent or worsening headaches
• Seizures
• Changes in vision, hearing or speech
• Balance or coordination issues
• Memory problems or personality changes
• Nausea or vomiting

One of the most important things people can do is pay attention to changes in their normal health patterns, according to Dr. Bander.

“If something feels different or is progressively worsening, it’s worth getting checked out,” he says. “Early evaluation allows us to identify problems sooner and, in many cases, offer less invasive treatment options.”

How Benign Brain Tumors Are Diagnosed

At Baptist Health Brain & Spine Care, diagnosis begins with a thorough evaluation and advanced imaging, according to Dr. Moore. Common diagnostic tools include:

• MRI, which provides detailed images of the brain
• CT scans, used in certain cases

In some situations, a biopsy may be needed to confirm the tumor type.

“Accurate diagnosis is critical because there are many different types of brain tumors,” Dr. Moore says. “Our approach is highly personalized, based on each patient’s specific condition.”

Treatment Options for Benign Brain Tumor

Care of a benign brain tumor is tailored to the individual and may include:

     • Active surveillance: Some tumors can be safely monitored over time. “Not every tumor requires immediate treatment,” Dr. Moore says. “In select cases, careful observation is the safest and most appropriate option.”

     • Surgery: Often recommended when a tumor is causing symptoms or growing. “Our priority is always to remove the tumor safely while preserving neurological function,” Dr. Moore explains.

     • Radiation Therapy: This may be used when surgery isn’t possible or to treat remaining tumor tissue, according to Dr. Moore.

     • Advanced, Minimally Invasive Techniques: For certain tumors, less invasive approaches are available. “We use endoscopic techniques to reach some tumors through natural pathways, such as the nasal passages. This can reduce recovery time and improve patient comfort,” Dr. Moore says.

A Reassuring Outlook

Dr. Bander notes that many patients diagnosed with a benign brain tumor end up with a positive prognosis—especially when the tumor is detected early and managed by a specialized team.

He also says that patients today have access to more precise diagnostics and more targeted treatments than ever before. “This allows us to treat tumors effectively while maintaining quality of life.”

Click here to learn more about benign brain tumor treatments and services available at Baptist Health Brain & Spine Care.