Brain Tumours: Not All Are Cancerous – Types, Symptoms, and Why Early Diagnosis Matters

By Dr. Amitabha Das, Consultant Neurosurgeon & Minimally Invasive Spine Surgeon, Kolkata

Introduction

When people hear the words “brain tumour,” their minds often jump to the worst-case scenario—cancer and death. But did you know not all brain tumours are cancerous? In fact, many are benign (non-cancerous) and treatable, especially when detected early.

Understanding the types, warning signs, and the importance of timely diagnosis can empower you and your loved ones to act before complications arise.

What is a Brain Tumour?

A brain tumour is an abnormal growth of cells in the brain or nearby structures.
They can be:

• Benign: Non-cancerous, slow-growing, and less likely to spread.

• Malignant: Cancerous, potentially aggressive, and can invade surrounding tissues.

👉 Important: Even benign tumours can cause serious issues by pressing on vital brain areas.

Types of Brain Tumours

Primary vs. Secondary (Metastatic)

• Primary Brain Tumours: Originate in the brain.

  • Benign: Meningiomas, Schwannomas, Pituitary Adenomas

  • Malignant: Glioblastomas, Anaplastic Astrocytomas

• Secondary Tumours: Cancers that spread to the brain from other body parts, like lung or breast.

Common Benign Brain Tumours

• Meningioma: Usually slow-growing, from the brain’s covering.

• Schwannoma: Often affects the hearing nerve (vestibular schwannoma).

• Pituitary Adenoma: Can affect hormone production.

Common Malignant Brain Tumours

• Glioblastoma (GBM): Fast-growing and aggressive.

• Medulloblastoma: Often seen in children, affects the cerebellum.

• Anaplastic Astrocytoma: High-grade malignant tumour.

Symptoms to Watch For

Brain tumour symptoms vary based on size, type, and location. Common signs include:
✅ Persistent headaches (especially worse in the morning or with coughing/sneezing)
✅ New or unusual seizures
✅ Blurred or double vision
✅ Unexplained nausea or vomiting
✅ Weakness or numbness in limbs
✅ Balance problems or difficulty walking
✅ Personality changes or memory issues
✅ Hearing loss or ringing in the ears
✅ Hormonal disturbances (with pituitary tumours)

👉 If these symptoms persist or worsen, consult a neurologist or neurosurgeon immediately.

Why Early Diagnosis Matters

✅ Benign tumours: Easier to treat if caught early—often curable.
✅ Malignant tumours: Early treatment can slow progression and improve survival.
✅ Small tumours: Can respond well to surgery, radiosurgery, or medication.
✅ Delayed diagnosis: May lead to permanent neurological damage.

Modern imaging like MRI can detect even small tumours before severe symptoms appear.

Treatment Options

Depending on tumour type and location:

• Observation (for small, symptomless tumours)

• Surgical removal

• Radiotherapy or stereotactic radiosurgery

• Chemotherapy (for malignant tumours)

• Hormonal therapy (for pituitary tumours)

• Rehabilitation (post-surgery)

👉 Treatment is always personalized based on the patient’s health and tumour characteristics.

Final Thoughts: “Tumour” Doesn’t Always Mean Cancer

Don’t panic if you hear the word “tumour.” Many brain tumours are manageable and some are curable—especially when diagnosed early.

✅ Be aware.
✅ Act promptly.
✅ Consult specialists without delay if symptoms arise.

About the Author

Dr. Amitabha Das is a leading Consultant Neurosurgeon and Minimally Invasive Spine Surgeon in Kolkata. He has performed over 5,000 complex brain and spine surgeries. A gold medalist from Medical College Kolkata and MCh Neurosurgery graduate from AIIMS New Delhi, Dr. Das is known for his patient-centric, ethical, and evidence-based care.

He is passionate about spreading awareness on neurological health and strongly believes informed patients make better decisions.