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My cat has a hard, callus-like pink lump on his chest. What is it?

Updated On September 23rd, 2025

Pet's info: Cat | American Shorthair | Male | neutered | 10 months and 19 days old | 10 lbs

Hi I noticed my cat has a hard, callus-like, pink lump on his chest. I have no idea what it is and I’m very worried!

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1 Answer

Most Helpful Answer

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Answered By Ricardo Fernandez, DVM

Veterinarian, Veterinary Oncology Resident

Published on November 27th, 2017

Thanks for using Petco Pet Education Center, formerly Petcoach! This could be a benign or malignant growth. This is often differentiated by a test called a fine needle aspirate (FNA) which is a pain free, inexpensive and easy procedure which in most cases will help reach a diagnosis. Sometimes a biopsy is needed for a definitive diagnosis. I recommend that you have him evaluated by your veterinarian for further assessment and treatment. I am really hoping for something benign. Good luck and have a good night!

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