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What is this white lump on my dog's rectal area? Should I worry?

Updated On September 23rd, 2025

Pet's info: Dog | Pug | Male | neutered | 5 years and 1 month old | 16 lbs

My dog has a pea size white cyst on his rectal area. No anal gland problems

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1 Answer

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Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on January 11th, 2019

This could be a cyst, it could be a benign growth, or it could be something more serious such as an anal sac carcinoma. Any suspicious lumps should be examined by the vet. The vet can perform a test called a fine needle aspirate on it. To do this, the vet sticks a small needle into the lump to get a sample of its cells, and examines the cells on a slide under a microscope. It's usually painless to the animal, and relatively quick to perform. Once the cause of the lump is diagnosed, the vet can discuss treatment options if needed. I'd give Vinny's vet a call to make him an appointment. Best of luck.

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