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Cat has fluid in belly, no appetite after tumor surgery. What's wrong?

Updated On September 23rd, 2025

Pet's info: Cat | Siamese | Female

Hi good afternoon. My cat had a surgery to remove a breast tumor and she was sterilized as well a month ago. She recovered well. After 2 weeks she started with ascites and loss of apetite and energy. The vet has done an x ray, and we could see a lot of fluid on the tummy, we couldn't even see any organs. If you can pls help me, what do you think might be the issue with my cat? Can the fluid be from the surgery? Or is it because of other tumors? Thanks, kind regards. Joana

1 Answer

Most Helpful Answer

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Answered By Jennifer Summerfield, DVM CPDT-KA

Veterinarian, Certified Dog Trainer

Published on March 11th, 2017

Poor Branquinha! I'm sorry to hear that she's having this problem. It's not normal to have ascites along with loss of appetite and energy as a result of her surgery two weeks ago, so I would be very concerned that something else is wrong. Possible causes of these symptoms would include liver disease, heart failure, severe protein loss due to kidney or GI disease, or some type of cancer. Testing that should help to sort this out would include blood work, abdominal ultrasound, and/or analysis of the abdominal fluid. I would recommend talking with your vet to see what they recommend as the next step for your kitty. If they don't have any suggestions, you could seek a second opinion from another local veterinarian, or request referral to an internal medicine specialist for further work-up.

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