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Is a hard lump at my cat's surgery incision normal after two weeks?

Updated On September 23rd, 2025

Pet's info: Cat | Domestic Shorthair | Female | spayed | 10 lbs

My two year old cat had surgery two weeks ago to remove a lump in her left hind leg. Fearing a fibrosarcoma, the vet removed quite a lot of tissue. The biopsy results revealed it to be benign inflammation. The incision has been healing well and we have tried to prevent movement by crating her. This is difficult because she’s so active. Now a hard little lump has appeared at the incision site. It doesn’t seem to bother her. Could this lump just be her body absorbing the internal stitches?

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1 Answer

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Answered By Jessica Desrosiers

Veterinary Technician

Published on January 3rd, 2023

If dissolving stitches were used for the layer beneath the skin, there can be some bumps/lumps that appear as the tissue heals as you mentioned. However, if the lump appears to grow in size rapidly, is hot or painful to the touch, causes problems with moving or bending the leg, or begins to ooze debris or pus, these are signs of something such as an infection/inflammation which should be examined by your vet. It would be best to double-check with your vet on what type of stitches were used, as they can provide more information. It's also a good idea to schedule a recheck for any suture/surgery sites 2-3 weeks post-surgery to ensure the wound has closed properly and is healing well.

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