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Dog has slow-growing, balloon-like lump on belly. What is it?

Updated On September 23rd, 2025

Pet's info: Dog | Maltese | Female | unspayed | 4 lbs

My dog has a balloon like lump on her belly that is slow growing. What could it be?

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1 Answer

Most Helpful Answer

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Answered By Makenzie Kurth, DVM

Veterinarian

Published on February 18th, 2018

Thanks for using Petco Pet Education Center, formerly Petcoach! I can’t be sure about Twinkle’s mass but things that are coming to mind include: a benign fatty tumor, cyst, or a mammary tissue tumor. I would take Twinkle in to your vet who can give you a better guess based on how it feels. He or she may recommend a cytology (poking the mass with a slim needle and looking at the cells under the microscope) to determine if it needs to be removed or just monitored. Hope this helps and best of luck to you and Twinkle!

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