Brain tumours are an unusual group of conditions — not all are cancer. Many are benign but still serious because of where they grow. Early symptoms can be remarkably subtle: a new morning headache, an unexplained seizure, a slow change in vision or personality. Recognising these signs early is the single biggest factor in outcome.
A brain tumour is any abnormal growth of cells inside the skull or in the membranes covering the brain. Brain tumours are divided into two broad groups: primary brain tumours, which start in the brain or its surrounding tissue, and secondary (metastatic) brain tumours, which have spread to the brain from a cancer elsewhere in the body — most commonly lung, breast, kidney, colon or melanoma. Secondary brain tumours are several times more common than primary ones in adults.
A critical point that surprises many patients is that not every brain tumour is cancerous. Meningiomas, pituitary adenomas and many other primary brain tumours are benign — they do not invade nearby tissue or spread elsewhere. But because the skull is a closed space, even a benign tumour can cause serious symptoms by pressing on critical brain structures. This is why the right framing is brain tumour rather than brain cancer, and why every brain tumour deserves a careful specialist evaluation — benign or otherwise.
Brain tumours are classified by where they begin and the type of cell they arise from. The most common primary and secondary types include:
The most common group of malignant primary brain tumours, arising from the supportive glial cells of the brain. Includes low-grade gliomas (slower growing), anaplastic astrocytoma, and glioblastoma multiforme (the most aggressive form). Treatment combines surgical resection, radiation therapy and chemotherapy, with newer targeted and immunotherapy approaches in selected cases.
The most common benign primary brain tumours, arising from the membranes (meninges) covering the brain. Most meningiomas grow slowly and are cured by surgery alone, with radiation reserved for cases that cannot be completely removed or recur.
Tumours of the pituitary gland at the base of the brain. The great majority are benign but can cause hormonal disturbances or pressure-related symptoms such as vision changes. Treatment may be surgical (often through the nose), medical (with hormone-blocking drugs), or radiation, depending on the type.
Benign tumours of the nerve that connects the inner ear to the brain. Often present with one-sided hearing loss, ringing in one ear, or balance problems. Treated with observation, stereotactic radiation, or microsurgery.
Medulloblastoma is the most common malignant paediatric brain tumour, primarily affecting young children. Treatment combines surgery, radiation and chemotherapy. Other paediatric brain tumours include ependymomas, craniopharyngiomas and brainstem gliomas.
A rare cancer of the immune cells within the brain, often seen in older adults or in immunosuppressed patients. Treated primarily with chemotherapy, sometimes combined with radiation.
Cancers that have spread to the brain from another organ — most commonly lung, breast, kidney, colon or melanoma. Several times more common than primary brain tumours in adults. Treatment focuses on systemic therapy for the primary cancer, combined with stereotactic radiosurgery, whole-brain radiation, or neurosurgery for accessible lesions.
For detailed information on diagnosis, microsurgery, stereotactic radiosurgery, advanced radiation therapy and systemic therapy options, see our dedicated page on brain tumor treatment in Hyderabad.
Brain tumour symptoms depend heavily on where in the brain the tumour grows. Common warning signs include:
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Brain tumour outcomes — benign or malignant — depend on early specialist review. Get a free 45-minute consultation with CION's neuro-oncology team.
Brain tumours, both primary and secondary, are diagnosed routinely across Telangana and Andhra Pradesh, but the patient journey is often delayed because early symptoms — persistent headache, subtle behavioural change, mild weakness — are easily attributed to stress, migraine, or normal ageing. The widespread availability of MRI in major centres including Hyderabad means that brain tumours can now be detected far earlier than was previously possible, provided the patient is referred for imaging.
Anyone with a new persistent headache pattern, new-onset seizures in adulthood, or unexplained one-sided weakness deserves a neurological examination and almost always an MRI brain scan. For patients with known cancer elsewhere, the threshold for brain imaging should be even lower — secondary brain tumours are now treatable with stereotactic radiosurgery and modern systemic therapy with meaningfully improved outcomes.
The cause of most brain tumours is not identifiable. Known risk factors include:
See a neuro-oncologist or neurologist promptly if you notice any of the following:
A short specialist consultation and the right diagnostic test — imaging, endoscopy, biopsy, or blood test as appropriate — is usually enough to confirm or rule out cancer. Early action is always easier than catching up later.
Our NABH-accredited centres across Hyderabad deliver evidence-based brain tumor care — from MRI imaging and stereotactic biopsy through to microsurgical resection, awake craniotomy, advanced radiation therapy (IMRT/IGRT/SRS), stereotactic radiosurgery, chemotherapy and targeted therapy — guided by NCCN and EANO protocols and reviewed for every patient by a multidisciplinary neuro-oncology tumour board.
For a detailed walk-through of brain tumor diagnosis, treatment options, costs, and our specialist team, see our dedicated page on brain tumor treatment in Hyderabad.
From the first MRI to the last follow-up, our neuro-oncology team walks this journey with you — tumour board for every patient, decisions for healing, not billing.
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Start Your Story. Book Free Consultation.Disclaimer: This page is intended for general informational purposes only and does not constitute medical advice, diagnosis, or treatment. Always consult a qualified oncologist for guidance specific to your medical condition. Content on this page is periodically reviewed and updated by CION's medical team in accordance with current clinical guidelines.
The most common first sign is a new persistent headache — often worse in the morning, sometimes waking the person from sleep, and gradually worsening over weeks. Other early signs include a first-ever seizure in adulthood, unexplained weakness or numbness on one side, vision changes, speech difficulties, or a noticeable change in personality or behaviour. The unifying theme is something new and persistent — a headache pattern you have never had before, or a neurological symptom that does not settle, deserves imaging.
No. Many brain tumours are benign — meningiomas, pituitary adenomas, acoustic neuromas, and many others. Benign tumours do not invade nearby tissue or spread elsewhere in the body. However, because the skull is a closed space, even a benign brain tumour can cause serious symptoms by pressing on critical brain structures. This is why every brain tumour deserves a careful specialist evaluation — and why the right term is brain tumour rather than brain cancer.
It depends on the type. Many benign brain tumours — including most meningiomas, pituitary adenomas, and acoustic neuromas — are completely curable with surgery alone, or with surgery combined with stereotactic radiosurgery. Some low-grade gliomas can be controlled for many years with treatment. The most aggressive primary brain tumour, glioblastoma, remains difficult to cure but newer combination treatments, targeted therapy, and tumour-treating fields are meaningfully improving survival. Secondary brain tumours, while rarely curable, can often be controlled for extended periods with modern stereotactic radiosurgery and systemic therapy.
The term brain tumour covers any abnormal growth of cells inside the skull — whether benign or malignant. The term brain cancer refers only to malignant brain tumours, which grow more rapidly, invade nearby brain tissue, and behave aggressively. Many brain tumours, including most meningiomas and pituitary adenomas, are technically not cancer — they are benign tumours that still need treatment because of where they grow. This distinction matters because treatment and prognosis differ significantly.
People with a history of radiation therapy to the head, those with inherited cancer syndromes such as neurofibromatosis, tuberous sclerosis, or Li-Fraumeni syndrome, individuals with weakened immune systems (raising the risk of CNS lymphoma), and people with cancer elsewhere (raising the risk of secondary brain tumours) are at higher risk. Age also matters — gliomas and meningiomas are more common in older adults, while medulloblastoma is primarily a childhood cancer.
