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IF YOUR CAT WAS JUST DIAGNOSED WITH FELINE BRAIN TUMORS,
THIS GUIDE IS FOR YOU.
IF YOUR CAT WAS JUST DIAGNOSED WITH FELINE BRAIN TUMORS…
A diagnosis of a brain tumor in your cat is one of the most frightening, emotionally
overwhelming moments a pet parent can face. Seizures, circling, behavior changes,
blindness, or sudden personality shifts can leave you shocked and terrified.
You love your cat.
You want answers — not panic.
You want clarity — not confusion.
You want a plan — not despair.
This guide is written for you:
The science-minded, deeply bonded pet parent who wants compassion, truth, treatment options, and hope, all grounded in 40 years of clinical veterinary experience.
Here’s the single most important thing to know:
Many brain tumors in cats — especially meningiomas — are treatable.
Some cats live 1–3+ years with excellent quality of life.
You are not alone.
YOU ARE NOT ALONE.
YOU ARE NOT FAILING YOUR DOG.
YOU’RE IN THE RIGHT SPOT.
I CAN HELP YOU.
FAST FACTS ABOUT FELINE BRAIN TUMORS IN CATS–A quick summary before diving deeper.
What they are:
Abnormal growths within the skull affecting brain tissue, membranes, or nearby structures.
Most common tumor types:
• Meningioma (most common in cats; often benign behavior)
• Lymphoma
• Glioma (astrocytoma, oligodendroglioma)
• Choroid plexus tumors
• Pituitary tumors
• Metastatic tumors (lung, melanoma, etc.)
How common are they?
Uncommon but more frequently diagnosed with advanced imaging.
How they behave:
• Cause neurologic signs based on location
• Meningiomas are often well-defined and surgically removable
• Gliomas and lymphomas are more aggressive
• Seizures are a hallmark symptom
Is it painful?
The brain has no pain receptors — but tumors cause secondary pain through pressure, inflammation, or increased intracranial pressure.
Life expectancy if untreated:
Weeks to a few months.
Most important first step:
Get an MRI — this is the gold standard for brain tumor diagnosis.
Most important diagnostic tests:
• MRI of brain
• CSF tap (sometimes)
• Bloodwork
• Blood pressure measurement
• Thoracic imaging (if metastasis suspected)
WHAT THIS DIAGNOSIS MEANS FOR YOUR CAT
Brain tumors are frightening, but not all are the same.
Meningioma (Most Common & Most Treatable)
• Typically benign behavior
• Often single, well-defined mass
• Grows outward from meninges
• Surgical removal is highly successful
• Cats may live 1–3+ years after surgery
• Radiation therapy effective if surgery not possible
Lymphoma
• More aggressive
• Responds very well to chemotherapy
• Can achieve remission
• Prognosis variable: months to 1+ year
Glioma
• Invasive
• Less likely surgically curable
• Radiation + chemo may extend life
• Prognosis: months
Pituitary Tumors
• Cause endocrine changes (ACTH or growth hormone)
• Respond to radiation therapy
• Treatable depending on size
Your cat’s quality of life can often be restored with the right intervention.
HOW BRAIN TUMORS GROW
1. Local Compression
Brain tumors cause:
• Increased intracranial pressure
• Swelling
• Compression of normal tissue
• Disruption of neurological pathways
Symptoms depend on the tumor’s location.
2. Invasion (Tumor-type specific)
• Meningiomas: compressive, not deeply invasive
• Gliomas: infiltrative and destructive
• Lymphoma: can spread through CNS
• Choroid plexus tumors: may spread to ventricles
3. Secondary Effects
• Seizures
• Blindness
• Personality changes
• Loss of balance
• Nausea/vomiting
• Altered mentation
These symptoms often bring cats to the vet.
COMMON SYMPTOMS
Symptoms depend on the region of the brain affected.
FOREBRAIN TUMORS (Very common in meningioma)
• Seizures (most common sign)
• Behavior changes
• Circling
• Head pressing
• Blindness
• Pacing
• Personality changes (“not acting like themselves”)
• Disorientation
• Sleeping more
CEREBELLAR TUMORS
• Loss of balance
• Wobbliness (ataxia)
• Intention tremors
• Wide-based stance
BRAINSTEM TUMORS
• Falling over
• Weakness
• Facial paralysis
• Difficulty swallowing
• Abnormal eye movements
• Collapse episodes
• Decreased consciousness
HOW IT’S DIAGNOSED
1. MRI (Magnetic Resonance Imaging) — The Gold Standard
Provides:
• Tumor size
• Location
• Type characteristics
• Mass effect
• Swelling (edema)
• CSF obstruction
MRI is essential for differentiating tumor types.
2. CT Scan
Useful but less detailed.
Good for:
• Bone involvement
• Emergency imaging
• Surgical planning
MRI is strongly preferred for most cases.
3. CSF Tap
May help diagnose:
• Lymphoma
• Inflammatory disease
• Meningoencephalitis
Not always safe if tumor causing high pressure.
4. Bloodwork & Urinalysis
Ensures anesthesia safety and screens for infection.
5. Chest Imaging
Rules out:
• Metastatic cancer
• Primary lung tumors
HOW URGENT IS THIS?
What to Do Today, This Week, This Month
Today (First 24 Hours)
Signs of a brain tumor can escalate quickly.
Emergency if your cat has:
• A seizure that lasts > 3 minutes
• Two seizures in 24 hours
• Collapse
• Disorientation
• Severe head tilt or inability to walk
• Persistent vomiting
• Sudden blindness
Immediate steps:
• Keep cat calm
• Turn off lights/sounds
• Move furniture to prevent injury during seizures
• Do NOT put anything in their mouth
• Call your vet or emergency hospital
This Week
Your goals:
• Schedule MRI
• Begin seizure medication (if needed)
• Begin steroids to reduce swelling (prednisolone)
• Get blood pressure measured
• Schedule oncology or neurology consult
This Month
You will:
• Decide on surgery (meningioma)
• Begin radiation therapy (glioma, meningioma, pituitary)
• Start chemotherapy (lymphoma)
• Implement supportive care
• Build long-term monitoring plan
TREATMENT OPTIONS FOR FELINE BRAIN TUMORS IN CAT
CLINICAL TRIALS FOR FELINE BRAIN TUMORS
Your Clinical Trial Hub may include:
• SRT vs IMRT studies
• Chemotherapy for gliomas
• Novel immunotherapies
• Targeted therapy trials
• Comparative neurology studies
IS MY CAT IN PAIN?
Brain tumors cause discomfort indirectly through:
• Swelling
• Increased pressure
• Behavioral distress
• Nausea
Signs of discomfort:
• Hiding
• Crying when touched
• Confusion
• Restlessness
• Pacing
• Decreased grooming
Pain management dramatically improves quality of life.
PROGNOSIS FOR FELINE BRAIN TUMORS
Meningioma (Best Prognosis)
• Surgery alone: 1–3+ years
• Surgery + radiation: even longer
Lymphoma
• With chemo: 6–18+ months
• With radiation + chemo: longer possible
Glioma
• More aggressive
• Radiation: 6–12 months
• Palliative care: 1–4 months
Pituitary tumors
• Radiation: 12–24 months
• Palliative only: weeks–months
Without treatment:
• 1–2 months depending on severity
Quality of life:
Cats often regain:
• Normal personality
• Playfulness
• Appetite
• Mobility
• Comfort and calmness
• Seizure control
WHAT YOU CAN DO AT HOME
Day-to-Day Management
• Seizure frequency
• Appetite
• Behavior
• Gait/wobbliness
• Vision changes
• Head tilt
• Breathing
• Interaction and affection
Comfort Care
• Quiet, dim environment
• Reduce stressors
• Prevent access to stairs
• Keep nails trimmed
• Use padded bedding
Nutrition
• High-protein, moderate-fat diets
• Omega-3 supplementation
• Hydration
• Warming food to enhance aroma
Seizure Management
• Give anticonvulsants regularly
• Keep a seizure log
• Avoid flashing lights or loud sounds
• Use CBD/CBDA (vet-guided)
WHAT NOT TO DO
• Do NOT delay MRI
• Do NOT give human seizure meds
• Do NOT ignore mild seizures
• Do NOT allow unsupervised access to heights
• Do NOT stop steroids abruptly
• Do NOT rely solely on supplements
WHEN TO SEEK EMERGENCY CARE
Emergency situations include:
• Cluster seizures (multiple in 24 hrs)
• Seizure lasting > 3 minutes
• Collapse or unresponsiveness
• Severe disorientation
• Sudden blindness
• Rapid neurological decline
• Persistent vomiting (ICP concern)
QUESTIONS TO ASK YOUR VETERINARIAN OR ONCOLOGIST
Take this list with you:
1. What type of brain tumor does my cat likely have?
2. Should we do an MRI or CT?
3. Is my cat a surgery candidate?
4. Will radiation help?
5. Do we need seizure medication?
6. Should we start steroids today?
7. Is this tumor operable?
8. What is expected progression without treatment?
9. How do we maintain comfort at home?
10.What signs indicate emergency decline?
YOUR NEXT STEP (SUPPORT FOR THE PET PARENT)
Pet Cancer Navigator Consultation
You do NOT need to navigate fibrosarcoma alone.
We can help you:
• Interpret MRI results
• Decide between surgery, radiation, or chemo
• Build a seizure-control plan
• Manage side effects
• Create a personalized longevity and comfort roadmap
CTAs:
• Talk With Dr. Kevin
• Upload Your Dog’s Pathology or Imaging
• Get a Personalized Cancer Roadmap
STORIES OF HOPE
Surgery restored Sasha’s personality, mobility, and joy.
Aggressive therapy brought Nero back to a happy, loving life.
SCIENTIFIC REFERENCES
To be listed in CMS from:
• ACVIM neurology & oncology guidelines
• JAVMA feline brain tumor studies
• UC Davis & CSU neurosurgery outcome data
• Radiation therapy literature
• Lymphoma CNS treatment research
DOWNLOAD: YOUR FELINE BRAIN TUMORS ACTION PLAN
Includes:
• What to do today
• MRI checklist
• Surgery vs radiation decision chart
• Seizure monitoring log
• QOL scoring
CTA: Get Your Personalized Cancer Roadmap
FREQUENTLY ASKED QUESTIONS (SEO BLOCK)
SEO-focused FAQs include:
• How long can a cat live with a brain tumor?
• Are brain tumors painful?
• What causes seizures in older cats?
• Is MRI necessary?
• Can a brain tumor be removed?
• Does radiation help brain tumors?
• How do I know if my cat is suffering?
YOU ARE NOT ALONE — I CAN HELP YOU MAKE THE RIGHT DECISIONS
A Pet Cancer Navigator Consultation with Dr. Kevin provides:
• A personalized treatment roadmap
• Pain control guidance
• Amputation vs limb-sparing recommendations
• Clear prognosis
• Integrative longevity planning
• Emotional support through a devastating diagnosis