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My cat's lump burst open and matter came out. What should I do?

Updated On September 23rd, 2025

My 2 yr old cat has a large lump that held matter inside I. Thought it might of been a siste but last night on it's own popes what was it and what do I do and yes she's a indoor cat only with all shots and fixed.

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Answered By Vanessa Yeager DVM MPH

Veterinarian

Published on October 24th, 2017

Hi there and thanks for posting! If you cat has a lump or mass that has appeared to have ruptured, I would visit your veterinarian right away. The mass may need to be removed or treated with antibiotics. Your veterinarian may also take a sample of the mass to determine what it is and if it needs to be removed. I hope this helps and thanks for using Petco Pet Education Center, formerly Petcoach!

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