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My senior dog has a red spot on her lip. Is it a mast cell tumor?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Medium (23 - 60lb) | Female

So about q0 minutes ago I saw a small red spot on my dogs lip and am worried about what it could be because she is 11 to 12 years old ( a rescue) and she already has a few issues that are waiting diagnosis but I would more specifically like to know what is going on with her lip photos are attached

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1 Answer

Most Helpful Answer

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Answered By Dr. Elizabeth

Veterinarian

Published on May 30th, 2019

I recommend to have Lola examined by her veterinarian. I can't tell from the photo, but it looks a little raised and could be a mass. Skin masses can be many things but red raised masses are especially concerning for a skin cancer called a Mast Cell tumor. Your veterinarian will need to collect a sample of cell to examined under the microscope to determine what this is and if further treatment is needed. Have this checked out soon.

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