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My older female dog has a nipple lump with discharge. Is it cancer?

Updated On September 23rd, 2025

Pet's info: Dog | Dogue de Bordeaux | Female | spayed | 9 years and 6 months old

My bitch has a lump on her 5th nipple filled with lumps that move about like marbles. They do not hurt her but pink discharge out nipple when squeezed

1 Answer

Most Helpful Answer

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Answered By Daniel Fonza, DVM

Veterinarian

Published on December 6th, 2017

Hi there and thank you for using pet coach. In an older female with lumps near or associated with the nipple, I get concerned with mammary tumors. In dogs, about 50% of these can be cancerous and the rest benign. I would recommend having this looked at by your veterinarian for further testing. Your vet can insert a small needle into the mass and look at the cells under a microscope to help determine what it could be. I hope this helps guide you in the right direction. Please let me know if you have any other questions or concerns.

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