Dr. Sue's Cat Lymphoma Lecture in Norway
Why chronic vomiting in cats is often dismissed - and what it can really mean
Episode aired Jan 5, 2019·Page synthesised Jun 7, 2026·Last reviewed Jun 7, 2026
What this episode covers
- Chronic vomiting and weight loss in cats are often dismissed as normal, but may signal serious gut disease.
- The most common form is feline lymphoma, which often responds well to treatment if caught early.
- Cats also generally tolerate chemotherapy better than dogs.
Why it matters
Chronic vomiting in cats can affect digestion, nutrition, immune health, and treatment options. A vet visit for repeated vomiting episodes may save your cat months of decline through earlier detection of gut disease or lymphoma.
What stands out
- Most modern feline lymphoma is FeLV-negative T-cell lymphoma, breaking the historical FeLV-driven pattern many vets and owners still expect (clinical observation across modern feline oncology)
- Cats often tolerate chemotherapy better than dogs, and many continue normal life during treatment (clinical observation in veterinary oncology practice)
- Frequent vomiting in cats is not a normal hairball pattern, even when it has been happening for months (clinical observation in feline internal medicine)
Best-supported action
The single highest-leverage move from this episode, anchored in the strongest evidence the speaker presents.
Track every vomiting episode for one month - date, time, what your cat ate beforehand - and bring the list to your vet at the next appointment.
Where to start
Small low-friction starters covering the main moves from this episode.
- Notice whether your cat has lost weight or shows changes in coat or energy
- Watch how your cat behaves around the food bowl and litter box compared to a year ago
- Ask your vet what tests they would run if vomiting episodes continue past a few weeks
Other supported actions
Further actions discussed in this episode, ordered from strongest to weakest evidence. This is one expert's view, the full topic compares and ranks across experts.
- Track every vomiting episode in your cat for one month: date, time, what was eaten beforehand, and presence of weight loss.Moderate evidence
- Weigh your cat regularly at home or at routine vet visits starting in middle age; flag any unexplained weight loss to your vet.Moderate evidence
- Ask your vet about advanced diagnostic options (ultrasound, biopsy) if chronic vomiting or weight loss persists past several weeks despite dietary adjustments.Moderate evidence
Full context, impact ratings, and timing — available in related topics
Questions to take to your doctor
- Given my cat's repeated vomiting episodes over the past several months, would bloodwork or imaging meaningfully change what we do, or just be informational?
- Given my cat's weight loss and intermittent vomiting, is full-thickness biopsy something we should be considering, or could ultrasound be sufficient first?
- Given my cat's age and our family situation, what would treatment for lymphoma typically look like in your practice if we go that route?
Full doctor prep with ranked questions available in the full topic page
Context
Helps explain when chronic symptoms in pets (especially vomiting or weight loss in cats) may warrant cancer workup, and how mainstream chemotherapy protocols actually work in companion animals. Strongest on clinical decision-making in oncology practice. Carries commercial interest in the Dog Cancer Survival Guide ecosystem and her own brand; useful framing is to treat her clinical guidance as mainstream-aligned while noting the commercial layer.
This is based on one veterinary oncologist's clinical lecture, not new trial findings. Protocols like CHOP chemotherapy and full-thickness biopsy are mainstream feline oncology, but evidence varies by cancer subtype. The speaker has a commercial interest in the Dog Cancer Survival Guide ecosystem; this is worth knowing alongside her recommendations. This does not mean you should change or stop your cat's current treatment on your own.
Where people go wrong
- Treating weekly cat vomiting as normal hairball behavior, especially in older catsSerious gut disease, including lymphoma, may go undetected until late stages where treatment options narrow
- Assuming feline cancer treatment will be as harsh as human cancer treatmentYou may rule out chemotherapy options that many cats actually tolerate well, missing meaningful additional time
What to expect over time
- First month of symptomsTrack vomiting episodes and any weight changes; bring the log to your vet
- Diagnosis workupBloodwork, imaging, possibly biopsy depending on findings; differentiate IBD from lymphoma
- Treatment phaseProtocol depends on grade and type; many cats continue normal life during treatment