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My dog has a growing lump near his testicles. What should I do?

Updated On September 23rd, 2025

Pet's info: Dog | Labrador Retriever | Male | unneutered | 12 years old

Hi, my dog has a huge mass near his genitals. Like, its not ON his testicles or whatever, but rather sort of... right next to it if that makes any sense. However, now it's mostly just right on top of them. It started as a small lump a year or so ago, and is now larger than his testicles themselves. It doesnt seem to cause him any pain, only slight discomfort when sitting or laying down. It also doesnt seem to be affecting his peeing or anything. I dont have any pictures yet, sorry

2 Answers

Most Helpful Answer

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Answered By Andrea M. Brodie, DVM

Veterinarian

Published on January 9th, 2019

This may be an abscess, a cyst or a tumor. You should have it examined by your veterinarian, as it is not possible to distinguish these by just looking at a photo. An abscess can usually be treated with antibiotics and/or be lanced, and a cyst can be evacuated. To identify a tumor, your vet may want to do a fine needle aspirate (he takes some material from the bump with a needle and then looks at it under the microscope) to determine whether the mass is concerning.

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Other Answers

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    Answered By Lauren Jones VMD

    Veterinarian

    Published on September 15th, 2017

    Poor Appu! I can understand your concern for your buddy! This lump could be due to a benign or malignant mass, a cyst, or abscessed wound. The only way to differentiate between these possible causes is by using a needle to draw a sample of the cells out so that the cells can be examined microscopically. From there, his vet will be able to determine if surgical removal of the lesion is needed, if it can be monitored at home, or if a course of antibiotics is indicated. I hope this helps and that all goes well!

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