Cancer Types and Treatments

Updated on: 7/25/2026

What Is a Brain Tumor?

A brain tumor is an abnormal growth of cells inside the brain. Some tumors grow slowly and remain localized (benign), while others are aggressive and may invade nearby tissue (malignant). In some cases, the tumor originates inside the brain itself (primary tumor). In others, it spreads from a different part of the body such as the lungs, breast, or kidneys (secondary tumor).

Although receiving a diagnosis can be shocking at first, understanding the condition and starting treatment as soon as possible can make a significant difference.

Types of Brain Tumors

There are many kinds of brain tumors, each with different characteristics:

• Gliomas: Begin in the brain's supportive cells; they range from low-grade to highly aggressive.
• Meningiomas: Often benign, but they can grow large and compress the brain.
• Metastatic tumors: Cancers that have spread to the brain from other organs.
• Lymphomas: Typically occur in individuals with weakened immune systems.
• Glioblastomas: One of the most aggressive and challenging brain tumors to treat.

Some tumors remain stable for years, while others progress rapidly and require urgent intervention.

Benign vs. Malignant: What's the Difference?

Not all brain tumors are cancerous:

• Benign tumors do not spread, but they might still affect brain function because of pressure on surrounding tissue.
• Malignant tumors can grow quickly and may recur after treatment.

Ultimately, a tumor's location and its effect on brain function often matter more than whether it is benign or malignant.

Know more about the difference between benign and malignant tumors.

Common Symptoms of Brain Tumors

Symptoms vary based on the tumor size, location, and growth rate. Some develop gradually, while others appear suddenly. Common signs include:

• Persistent headache
• Blurred or double vision
• Seizures, even in people without a history of epilepsy
• Difficulty walking or maintaining balance
• Weakness or numbness on one side of the body
• Confusion, memory loss, or personality changes
• Mood changes or trouble focusing
• Nausea or vomiting without a clear cause

You do not need to experience all of these symptoms. If something feels off and the symptoms persist, it is important to seek medical advice.

When to See a Doctor?

If you are experiencing several symptoms, especially if they are new or getting worse, it is advised to consult a neurologist promptly. Early diagnosis widens the treatment options and improves outcomes.

What Causes Brain Tumors?

In most cases, there is no exact known cause for a brain tumor. However, certain factors may increase the risk:

• Family history of brain tumors
• Prior radiation therapy to the head
• Weakened immune system
• Cancers in other organs that may spread to the brain
• Possible exposure to certain industrial chemicals (still under study)
• Age and gender: some tumors are more common in children or in men over 40

It is worth noting that brain tumors are rarely caused by anything the patient did or did not do.

How Are Brain Tumors Diagnosed?

Diagnosis typically begins when symptoms appear. Doctors may ask for any of the following to reach a confirmed diagnosis:

• MRI (Magnetic Resonance Imaging): The most detailed imaging tool for the brain.
• CT scan: Fast and useful in emergency situations.
• Biopsy: A tissue sample analyzed to determine whether the tumor is benign or malignant.
• EEG (Electroencephalogram): Used if seizures are present.
• Neurological exam: Tests memory, coordination, reflexes, and other brain functions.

What Happens If a Brain Tumor Is Left Untreated?

Untreated brain tumors can lead to serious complications, including:

• Permanent loss of key brain functions
• Increased intracranial pressure
• Trouble with breathing or swallowing
• In some cases, coma or even death

This is why early diagnosis and treatment matter so much.

Brain Tumor Treatment Options

Treatment depends on the tumor type, size, location, and the patient's overall health. Common options include:

• Surgery and CyberKnife to remove the tumor
• Radiation therapy to shrink the tumor or prevent further growth
• Chemotherapy, typically used for malignant or aggressive tumors
• Targeted or immune-based treatments for certain mutations
• Supportive medication to manage symptoms such as pain, swelling, or seizures

In some cases, treatment focuses on improving quality of life rather than curing the disease.

Can a Brain Tumor Be Cured?

Yes, especially when the tumor is diagnosed early and is removable or slow-growing. Even when a full cure is not possible, treatment can slow the disease, reduce symptoms, and support both lifespan and quality of life.

Survival and Recovery

Survival rates vary widely depending on the tumor type and when it is diagnosed:

• Benign tumors: Often curable with surgery and they rarely return.
• Low-grade malignant tumors: Can be managed for years.
• High-grade tumors such as glioblastoma: Five-year survival rates are around 10% on average, but some patients live longer with modern therapies.

Recovery may include physical or speech therapy, counseling, and lifestyle adjustments. Many patients resume daily life, though some need ongoing support.

Life After Treatment

Recovery does not end when treatment does. Patients may continue to need:

• Physical and speech therapy
• Emotional and psychological support
• Regular follow-up scans and tests