Can Neurological Problems Exist With Normal Scans? | Dr. Gurneet Sawhney

The problem with brain tumor symptoms isn’t that they’re rare. It’s that most of them look exactly like something ordinary.

A headache. A bit of dizziness. Forgetting a word mid-sentence. These things happen to everyone and usually mean nothing. But in certain patterns certain combinations, certain progressions  they stop being nothing. And the months people spend dismissing them as stress or poor sleep or getting older are often the months that matter most for what treatment can realistically do. The symptoms themselves aren’t always dramatic. The pattern is what gives them away.

Dr. Gurneet Singh Sawhney is a neurosurgeon at Fortis Hospital Mumbai with 18 years managing brain tumor cases across every stage including cases where the first consultation happened far later than it should have. He knows exactly which symptom combinations don’t get to wait.

Symptoms that aren’t going away and you’re not sure why?

Warning Signs That Actually Need Investigation

Not everything on this list means a tumor. But all of it means don’t wait.

Headaches that behave differently from every headache before: Most headaches are tension or migraine. But a headache that’s worse in the morning, wakes you from sleep, builds over weeks, or comes with nausea and vomiting — that’s a different pattern. Raised intracranial pressure causes headaches that respond poorly to paracetamol and get worse when you cough, bend over, or lie down. If your headaches have recently changed character new location, new severity, new timing that change is worth investigating regardless of headache history. Patients already reading about brain tumor surgery in Mumbai are often surprised to find that headache alone is rarely the first or only symptom. It’s headache plus something else that raises concern.

A first seizure in an adult with no history of epilepsy: This one doesn’t wait. Ever. A seizure in someone who’s never had one focal or generalised needs imaging the same day. Focal seizures are particularly telling. Rhythmic twitching in one hand. Sudden smell that isn’t there. A few seconds of blank staring with lip movements. These aren’t dramatic but they’re not nothing. Families who’ve spent time on whether neurological problems can exist with normal scans understand that a normal CT doesn’t fully close the question MRI with contrast is the investigation that matters here.

Weakness or numbness on one side that appeared gradually: Not from injury. Not from sleeping awkwardly. Weakness in an arm or leg that’s been quietly progressing over weeks getting worse, not better coming from the brain rather than the spine. The distinction matters and it requires a neurological examination to make it. Dismissing progressive unilateral weakness as a pinched nerve delays the scan that would show whether something else is going on.

Speech and language changes that are new: Struggling to find words that were always easy. Speaking fluently but saying things that don’t quite make sense. Understanding what someone says but not being able to respond. These are different presentations of language disruption and each one points to a different part of the brain. All of them need evaluation. None of them are a normal part of ageing at any age where this is appearing acutely.

Vision problems particularly in both eyes: Not blurred vision from a screen. Double vision that came from nowhere. Visual field loss a patch of missing vision in the same location in both eyes that happens when a tumor affects the visual pathway rather than the eye itself. An optometrist check will often find nothing wrong with the eyes because the problem isn’t in the eyes. Neurological visual symptoms need neurological investigation.

Personality or behaviour changes that others noticed before you did: This one gets missed most often. Tumors in the frontal lobe specifically can change someone’s judgement, impulse control, emotional responses gradually enough that the person living it doesn’t always register it. A partner, a parent, a colleague notices first. Uncharacteristic irritability. Decisions that don’t fit. Apathy in someone who wasn’t apathetic. These changes without obvious psychiatric history are worth taking seriously.

When to Stop Waiting and Get Scanned

Symptoms in isolation are less concerning than symptoms in combination or progression.

Combination is the real signal: One headache means very little. A headache plus a focal seizure plus progressive arm weakness in the same person over two months is a different story. The brain tumor red flags that genuinely can’t wait are new seizure, progressive focal neurological deficit weakness, speech change, visual field loss and headache with the raised-pressure pattern described above. Any one of these alone warrants urgent imaging. Two or more together is not a wait-and-see situation.

Progression matters more than severity: A mild symptom that was barely noticeable three months ago and is now affecting daily function has declared itself. Something is changing. That trajectory not the severity at any one point is what drives the urgency of the investigation.

Normal blood tests don’t rule this out: Blood work comes back fine. Doctors reassure. Months pass. Brain tumors don’t show up in blood tests. They show up on MRI with gadolinium contrast. If symptoms fit the pattern and a scan hasn’t been done, the scan needs to happen regardless of what everything else shows.

As a Neurosurgeon in Mumbai who has seen what late diagnosis costs in terms of surgical options and outcomes, Dr. Sawhney’s position on this is consistent when the symptom pattern fits, the MRI comes before the reassurance.

Why Choose Dr. Gurneet Singh Sawhney

Brain tumors caught early are manageable in ways that brain tumors caught late often aren’t. That’s not meant to frighten. It’s just the difference a few months makes in this particular disease.

Dr. Sawhney trained under Prof. Taira at Tokyo Women’s Medical University for functional neurosurgery and under Prof. Sugano at Juntendo University for epilepsy surgery. Two full fellowships at centres doing high-volume complex intracranial work. Back at Fortis Hospital Mulund West, the evaluation process for suspected brain tumor starts with the right imaging  MRI with gadolinium contrast, not just a CT  and moves quickly to a surgical plan if one is needed. The pre-surgical conversation covers location, grade, surgical approach, and realistic outcome for that specific tumor in that specific patient. Families who come in after months of being reassured elsewhere tend to want a straight answer quickly. That’s what the consultation is for.

FAQ's

What is the most common early warning sign of a brain tumor?

Persistent or progressively worsening headaches particularly ones that are worse in the morning, disturb sleep, or don’t respond to usual pain relief are among the most frequently reported early symptoms, though they’re rarely the only one present.

Can a brain tumor cause a seizure in someone with no history of epilepsy?

Yes a first seizure in an adult with no prior epilepsy history is a neurological emergency and requires urgent brain imaging the same day, regardless of how brief or mild the episode appeared.

Do brain tumor symptoms always come on suddenly?

No many tumors produce symptoms that build gradually over weeks or months, which is part of why they get dismissed early; progressive worsening of any neurological symptom over time is more concerning than a sudden isolated episode.

Can brain tumors be missed on a CT scan?

Yes CT scans can miss smaller tumors or tumors in certain locations; MRI with gadolinium contrast is the standard investigation for suspected brain tumor and provides significantly more detail than a CT alone.

 

How do I see Dr. Gurneet Singh Sawhney for brain tumor symptoms in Mumbai?

Call +91 8104310753 or email gurneetsawhney@gmail.com — he reviews imaging and clinical history before the consultation at Fortis Hospital, Mulund West, Mumbai, so the appointment is focused on your specific situation from the start.

References
  1. National Institute of Neurological Disorders and Stroke. Neurological Diagnostic Tests and Procedures. NINDS, NIH.
  2. Doraiswamy S, et al. Use of Digital Technologies in Facilitating Healthcare Access. PubMed Central, NCBI.