Brain Cancer: Causes, Symptoms and Treatment

Brain cancer occurs when abnormal cells in the brain begin to grow uncontrollably, forming a tumour that can interfere with essential brain functions. These tumours may develop in various regions of the brain, and their effects often depend on both their location and size. Because of this, the symptoms and the tumour’s rate of growth can vary significantly from person to person. Some brain tumours progress slowly and may be easier to manage, whereas others grow rapidly and could be life-threatening. This makes early recognition and proper diagnosis essential. The blog looks at what causes brain cancer, the symptoms that may appear, and how it is treated. Let us start by understanding what brain cancer is and how it affects the brain.

What is Brain Cancer?

Brain cancer is a condition where abnormal cells grow uncontrollably within the brain, forming a mass known as a tumour. These tumours can either start in the brain (primary brain tumours) or spread from cancer in another part of the body (secondary or metastatic brain tumours). Some brain tumours are malignant, which means they can grow quickly and invade nearby tissues. Others are benign and grow more slowly, but they can still cause serious problems if they press on parts of the brain. The brain controls many essential functions such as movement, speech, memory, and breathing, so any disruption caused by a tumour can affect how the body works. 

Brain cancer can affect people of all ages, and the outlook often depends on the type, size, location, and speed of growth of the tumour. Early diagnosis and timely treatment can help improve the chances of recovery and reduce complications.

What are the Types of Brain Cancer?

Brain cancer is classified based on the cells affected and how the tumour behaves:

• Gliomas: These tumours develop from glial cells, which support nerve cells in the brain. They vary in aggressiveness, from slower-growing types to highly aggressive forms that spread quickly.
• Meningiomas: These arise from the membranes that cover and protect the brain. Most meningiomas are non-cancerous, but some can be malignant and grow into nearby brain tissue.
• Medulloblastomas: Typically found in children, these tumours form in the cerebellum, the part of the brain responsible for balance and coordination. They tend to grow quickly and can spread to other areas of the brain and spinal cord.
• Secondary (Metastatic) Brain Cancers: These occur when cancer cells spread to the brain from other parts of the body, such as the lungs or breasts. They are more common than primary brain cancers and require treatment targeting both the brain tumour and the original cancer site.

Each type presents unique challenges and requires specific treatment strategies.

What Causes Brain Cancer?

The exact causes of brain cancer are not fully understood, but several factors can increase the risk of developing the disease:

• Radiation Exposure: High doses of radiation, such as those from certain medical treatments or environmental sources, can increase the risk of brain tumours.
• Genetic Factors: Inherited genetic mutations or family history of brain cancer may raise the likelihood of developing the disease.
• Chemical Exposure: Contact with specific chemicals or carcinogens, though rare, may contribute to brain cancer risk.
• Age: The risk of brain cancer generally increases with age, although some types are more common in children.
• Gender: Some types of brain tumours occur more frequently in males than females.
• Immune System Disorders: Conditions that weaken the immune system might increase susceptibility to brain tumours.

What are the Common Symptoms of Brain Cancer?

Brain cancer symptoms depend on the tumour’s size, type, and location within the brain. As the tumour grows, it can press on or damage nearby brain tissue, leading to a variety of signs. Common symptoms include:

• Persistent Headaches: These often become more frequent and severe over time, especially if they worsen in the morning or during physical activity.
• Nausea and Vomiting: Unexplained feelings of sickness and vomiting can occur, sometimes without an obvious cause.
• Vision Changes: Blurred vision, double vision, or loss of peripheral vision may develop as the tumour affects areas related to sight.
• Balance and Coordination Problems: Difficulty walking, unsteadiness, or problems with fine motor skills can arise if the tumour impacts the cerebellum or related pathways.
• Seizures: New onset seizures or convulsions, especially in someone with no previous history, can be a warning sign
• Weakness or Numbness: Loss of strength or sensation in the face, arms, or legs, often on one side of the body, may occur if motor areas are involved.
• Speech Difficulties: Trouble speaking clearly, finding words, or understanding language can indicate the tumour affects speech centres.
• Cognitive and Personality Changes: Confusion, memory problems, difficulty concentrating, or noticeable changes in mood and behaviour can result from tumour pressure on the frontal lobes.

Symptoms vary widely, and experiencing one or more does not automatically mean brain cancer is present. However, persistent or worsening symptoms should prompt medical evaluation.

How is Brain Cancer Diagnosed?

Diagnosing brain cancer involves several steps to confirm the presence of a tumour and determine its type and extent. These include:

Medical History and Physical Examination

The diagnostic process starts with a detailed review of symptoms and medical history. The doctor asks about headache patterns, vision changes, seizures, and other neurological signs. A physical examination focuses on the nervous system to check muscle strength, reflexes, coordination, balance, and sensory function. These checks help identify which parts of the brain might be affected.

Imaging Tests

Imaging plays a crucial role in detecting brain tumours. Magnetic resonance imaging (MRI) is the preferred method as it produces detailed images of brain structures and can highlight tumour size and location. In some cases, a computed tomography (CT) scan is used to quickly assess brain abnormalities, especially in emergencies. Contrast dyes may be injected during these scans to provide clearer images of tumours.
Additional imaging techniques may include:

• Magnetic Resonance Spectroscopy (MRS), which analyses chemical changes in brain tissue to help distinguish cancerous from non-cancerous growths.
• Positron Emission Tomography (PET), which detects areas of high metabolic activity often linked to cancer cells.
• Single Photon Emission Computed Tomography (SPECT), which creates three-dimensional images by tracking a radioactive tracer to show blood flow and tumour activity within the brain.

Biopsy

When imaging shows a suspicious mass, a biopsy is often necessary to confirm the diagnosis. This procedure involves removing a small sample of tissue from the tumour. The tissue is examined under a microscope to identify the exact type of cancer cells and determine the tumour’s grade, which indicates how aggressive it is. The biopsy can be done through surgery or a needle inserted into the brain, depending on the tumour’s position.

Additional Tests

Further tests might be conducted to gather more information. Blood tests assess overall health and organ function. A lumbar puncture, or spinal tap, may be performed to collect cerebrospinal fluid, which can show signs of cancer cells or infection. These additional tests help doctors develop a comprehensive understanding of the patient’s condition.

What Are the Treatment Options for Brain Cancer?

Treatment for brain cancer depends on several factors, including the type of tumour, its size and location, and how far it has progressed. The overall health of the patient is also taken into account before deciding the most suitable approach. In most cases, a combination of treatments is used to manage the condition effectively.

Surgery

Surgery is often the first step when the tumour is accessible. The goal is to remove as much of the tumour as possible without damaging critical brain areas. Surgery can relieve pressure on the brain and provide tissue for diagnosis. In some cases, complete removal is possible, but if the tumour is near vital structures, only partial removal may be safe.

Radiotherapy

Radiotherapy uses targeted high-energy rays to destroy cancer cells or stop them from growing. It may be used after surgery to eliminate remaining cells or as the primary treatment if surgery is not an option. Techniques like stereotactic radiosurgery deliver precise doses, minimising damage to healthy tissue.

Chemotherapy

Chemotherapy involves medicines that kill cancer cells or prevent them from multiplying. These drugs may be given orally or intravenously. Chemotherapy is often combined with other treatments and can be used for tumours that have spread or are difficult to remove surgically.

Targeted Therapy

Targeted therapy works by focusing on specific molecules or pathways that help cancer cells grow. These drugs are designed to block those signals and slow or stop tumour growth. This approach may be used for certain types of brain tumours with known genetic changes.

Immunotherapy

Immunotherapy aims to support the body’s immune system in identifying and attacking cancer cells. Although still under study for brain tumours, it may be an option for some patients, particularly when other treatments are not effective.

Supportive Care

In addition to direct cancer treatments, supportive care helps manage symptoms and maintain quality of life. This includes medications for pain, seizures, swelling, and psychological support.

When Should You Consult a Doctor?

It is important to seek medical advice if symptoms that suggest a problem in the brain appear suddenly or become worse over time. Many of these symptoms can have causes other than brain cancer, but they should not be ignored—especially if they persist despite basic treatment or rest. Medical attention received at an early stage can help detect serious conditions at a stage when they are more manageable.

Consult a doctor if any of the following occur:

• Frequent or worsening headaches – especially if they are new, occur in the morning, or are accompanied by nausea or visual changes.
• Unexplained nausea or vomiting – particularly when not linked to stomach issues or infections.
• Blurred or double vision – or sudden changes in eyesight without a clear cause.
• Seizures – especially if they occur for the first time in adulthood.
• Changes in speech, memory, or behaviour – such as confusion, forgetfulness, or personality changes.
• Weakness or numbness – in the face, arm, or leg, particularly on one side of the body.
• Loss of coordination or balance – leading to difficulty in walking or performing daily tasks.

A doctor may suggest further tests to understand the cause of these symptoms and guide the next steps.

Final Words

The thought of brain cancer can be overwhelming, not just for the one facing it but also for those around them. Questions often arise long before a diagnosis is made—questions about symptoms that don’t go away, small changes that feel unusual, or a sense that something just isn’t right. In these situations, it helps to speak to someone as a medical professional. At Max Hospital, neurologists and cancer specialists work together to evaluate concerns with care and attention to detail. If there’s even a slight worry that something more serious may be going on, this is the time to reach out—not with fear, but with the intention to understand. A consultation may not only offer answers but also bring much-needed reassurance or direction for what comes next.

Frequently Asked Questions

Is brain cancer always fatal?

Not necessarily. The outcome depends on several factors, including the type of tumour, its grade, where it is located, and how early it is diagnosed. Some tumours grow very slowly and respond well to treatment, allowing patients to live for many years with regular monitoring. Others may be more aggressive and harder to treat. Regular follow-ups and a clear treatment plan play a major role in improving outcomes.

Can brain cancer spread to other parts of the body?

Primary brain cancers typically remain confined to the brain or spinal cord. It is rare for them to spread to organs outside the central nervous system. However, they can grow into nearby brain tissue or cause pressure on other parts of the brain, leading to a range of symptoms and complications.

Are all brain tumours cancerous?

No. Some brain tumours are benign, which means they do not contain cancer cells and usually grow more slowly. However, even benign tumours can cause problems if they press on important areas of the brain. Malignant tumours, on the other hand, are cancerous and can be more aggressive in their behaviour.

Can lifestyle changes help manage brain cancer?

Lifestyle changes cannot treat brain cancer, but they can support overall well-being during and after treatment. Eating a balanced diet, getting enough rest, managing stress, and staying mentally and socially active can help patients feel stronger and cope better with treatment side effects. Doctors may also recommend physiotherapy or occupational therapy, depending on the impact of the tumour.

Is it safe to travel or fly with brain cancer?

Travel is possible in many cases but depends on the individual’s condition and recent treatments. Air travel, in particular, can be a concern after surgery or during active treatment due to changes in pressure and fatigue. It is always best to consult a doctor before making any travel plans.

How do patients cope with the emotional effects of brain cancer?

Being diagnosed with brain cancer can affect a person’s mental and emotional health. Anxiety, depression, and fear are common. Support from family, counselling, and patient groups can help manage these feelings. Some hospitals also offer psychological services or support programmes to help patients and families cope.

Can brain cancer come back after treatment?

Yes, there is a possibility of recurrence in some cases. The risk depends on the type and grade of the tumour. Follow-up scans and regular check-ups are important for early detection if the cancer returns. In some cases, additional treatment may be needed.

Does brain cancer run in families?

Most brain cancers are not inherited. However, there are a few rare genetic conditions that can increase the risk of developing brain tumours. If there is a strong family history of brain tumours or certain genetic disorders, genetic counselling may be suggested.

Can brain cancer affect a person’s behaviour or personality?

Changes in personality, behaviour, or mood can occur, especially if the tumour affects certain parts of the brain. Some people may notice memory issues, confusion, irritability, or emotional changes. These effects can sometimes improve with treatment or supportive therapies.

Are children affected by brain cancer in the same way as adults?

Brain tumours in children often involve different types than those seen in adults. The symptoms and treatment approach may also vary. Children tend to respond differently to treatment, and long-term care often includes monitoring development, learning, and emotional well-being as they grow.