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Dog's tumor surgery site swollen again. Is it infection or cancer?

Updated On September 23rd, 2025

Pet's info: Dog | Golden Labrador | Female | 5 years and 7 months old | 55 lbs

I have a labradore of 5 yrs female. She had a tumour which was removed by a vet 15 days earlier but i think she is having hard swelling again on 1st and last stiche. please suggest me is this an infectious cancer or what it is and how it will be treated please tell me as early as possible cause she is having weakness plus swelling on the whole left leg

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3 Answers

Most Helpful Answer

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Answered By Jenny, DVM

Veterinarian

Published on March 25th, 2018

The ends of the incision look infected and very painful. She should be rechecked right away for medication for pain and swelling and further antibiotics. She may need some parts opened and drained and flushed to help minimize the infection. If the tumor was cancerous and it was not completely removed, then there is a change the cells are angry and irritated and growing again from inflammation. Try to apply a warm compress and keep the area clean until you can get her in.

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    Answered By Ann Dion, DVM

    Veterinarian

    Published on December 30th, 2018

    Hello and welcome to Petco Pet Education Center, formerly Petcoach. A swelling on her stomach beside the incision is most likely a seroma, which is just a fluid filled sac. These resorb on their own over time. As long as the swelling isn't hot, painful, and she is acting normally, just get it checked in a few days. If she is acting weird or sick, and if the swelling is hot or painful, get her to the ER. Best of luck with your girl!

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    Answered By Linda G, MS, DVM

    Veterinarian

    Published on April 12th, 2019

    Hello. That is definitely a swelling that should be further investigated. Given her age, hopefully this is something benign, but you should continue with testing to see what is going on. Hope she is well soon & thanks for using Petco Pet Education Center, formerly Petcoach.

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