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My cat's burst lump has an open wound. How to treat it at home?

Updated On September 23rd, 2025

Pet's info: Cat | Mixed Breed | Male | neutered | 7 lbs

My cats lump he had on right side of his chest the size of an egg burst the other day a clear liquid and now there is an open hole there the size a pea. I can't get him to a vet for awhile and don't want it to get infected. What should I do for it and what is safe to put on it? I cleaned it last night with distilled water with a little salt, is that a good idea and should i bandage it ? Thank you

2 Answers

Most Helpful Answer

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Answered By Laura Johnson VMD

Veterinarian

Published on January 4th, 2018

Hi, thanks for using Petco Pet Education Center, formerly Petcoach! Poor Stormy! If Stormy goes outside the lump was probably an abscess that ruptured. If he is older than it could be a ruptured tumor. I wouldn't suggest bandaging it, cats dislike bandages and it sounds like it is in a awkward location to bandage. I would use an E-collar to prevent licking. Warm compress the swelling and wound 2-3 times per day to promote drainage. Clean the wound twice daily with warm water and a mild soap. I would avoid salt because it likely stings. Then apply a triple antibiotic ointment to the open area twice daily. He really needs to area evaluated and if it is an abscess antibiotics prescribed. I would be sure to get him to the Vet this week. I hope this helps and I wish you and Stormy the best!

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Other Answers

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    Answered By Dr. Dayna, DVM, CVA

    Veterinarian, Certified Veterinary Acupuncturist

    Published on December 26th, 2017

    That looks like it might be a ruptured abscess. Often these need antibiotics, but I have occasionally seen them heal with just supportive care. Warm compress of the area 2-3 times a day with warm water and Epsom salts. Also if you have access to clipper shaving the hair away from the wound keeps it cleaner as well. If it begins to look larger, redness or swelling around it, or a foul odor then she will need to be seen by a veterinarian. Best of luck and thank you for using Pet Coach.

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