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Updated on September 23rd, 2025
Pet's info: Dog | Mixed Breed Medium (23 - 60lb) | Female | 10 years and 1 month old | 50 lbs
My dog had a mast cell tumor removed from her hind leg four days ago. There is no weeping or bright redness in the incision area, but looks slightly swollen. I can’t tell if this is concerning or not. Not painful, it seems.
2 Answers

Answered By Jessica Desrosiers
Veterinary Technician
Published on October 10th, 2022
Answered By Laura Johnson VMD
Veterinarian
Published on January 16th, 2018
Hi, thanks for using Petco Pet Education Center, formerly Petcoach! Poor Marley!
Scar tissue formation is normal at the site of an incision. But due to Marley's history of mast cell tumors and their propensity to regrow that the site, I would have him evaluated by your Vet and consider aspirating the area to be sure it isn't the mast cell returning. The fact that the lump is that then end makes me think it is more likely scar tissue.
I hope this helps and I wish Marley the best!
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