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Are hard lumps on my dog's stomach normal after spay surgery?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed | Female | spayed | 8 months and 7 days old | 20 lbs

Dog Bitch has been spayed. Immediately noticed hard protruding lumps on her stomach. What I can only liken to a hernia. Went to vet for check up who advised was normal and gave antibiotics. I don’t know if this is “normal” or whether the vet has mucked up and fobbing me off with antibiotics. Can you please help?

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2 Answers

Most Helpful Answer

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Answered By Jenny, DVM

Veterinarian

Published on March 22nd, 2018

If not a hernia then it may be a seroma formation and inflammation from the tissue trying to repair it self and heal. Seromas are common and go away completely. They often happen in large breeds that may jump or run and be a little too active. If there is a hernia then the size may change from time to time as things go in and out Anti anti inflammatory medicine may be need to help this go away quicker. If it is not back to normal after a week or it continues to get larger then she should be rechecked again.

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Other Answers

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    Answered By Dr. Massimo Orioles, DVM, Cert AVP, MRCVS

    Veterinarian

    Published on August 20th, 2020

    Hi and thanks for your request. This lump may possibly be due to a herniation through the incision site or a tissue reaction to the internal stitches. An immediate check up would be ideal to determine the underlying cause more specifically and treat it. Unfortunately if there is an herniation, a revision surgery will be required.

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