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My cat has cancer, chest fluid. Vet says no treatment. Any options?

Updated on September 23rd, 2025

Pet's info: Cat | Mixed Breed | Female | spayed | 5 years and 4 months old | 3.5 lbs

My cat had fluid drained from her chest on Saturday 3/6/17 confirmed diagnosis of mediastinal lymphoma leukaemia positive. She is well after the procedure eating, drinking, playing etc but the vet have told me no treatment for the cancer not even trying chemo. Bella is 5 years old. I am devastated. Can I please have some advice.

1 Answer

Most Helpful Answer

Jennifer Summerfield, DVM CPDT-KA

Answered By Jennifer Summerfield, DVM CPDT-KA

Veterinarian, Certified Dog Trainer

Published on June 10th, 2017

Poor Bella! I'm so sorry to hear about her diagnosis. Unfortunately, it's true that mediastinal lymphoma with fluid in the chest generally has a very poor prognosis in cats. You could certainly request referral to a veterinary oncologist for a consultation about this - the oncologist could give you a much better idea of whether there are any treatment options at all that might help her.

If you aren't able to pursue referral to a specialist, then I'm afraid it's very unlikely that there is much at all that can be done by your family veterinarian - this is quite a serious problem that generally does not respond well to treatment. There may be some things that could help to keep Bella comfortable for a short time, such as draining the fluid to help her breathing and starting her on a steroid such as prednisone, but it's unlikely that these things will help for long. Again, I'm very sorry for the bad news you've received - cancer is a terrible disease, in pets just as in people. :(
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