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Could my dog's lip masses be from a broken tooth infection or tumors?

Updated on September 23rd, 2025

Pet's info: Dog | Pembroke Welsh Corgi | Male | neutered | 8 years and 11 months old

My dog's back tooth broke & cracked a while (5 months) and i plan to undergo extraction soon. Yesterday i found 2 mass in his upper lip inside (not gum) around 1.5cm each closed to the bad tooth. Vet prescribed 7 day antibiotics and asked for close monitoring of the mass during the medication to see if mass turns smaller, otherwise need to do biopsy to define what it is. Whether these mass may be caused by the tooth's infection or could be tumors?

1 Answer

Most Helpful Answer

Destini R. Holloway, DVM

Answered By Destini R. Holloway, DVM

Veterinarian

Published on December 7th, 2016

Honestly it could be either caused by the infected tooth or it could be a mass. This is why your vet first prescribed antibiotics to see if it goes down or not. Now this is the nerve racking wait and see period to determine if is something to worry about and requires a biopsy once the antibiotics have run their course.
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