Petco Text Logo
Petco Pet Logo

What's this firm, liquid-filled lump on my 4-month-old kitten's ribs?

Updated On September 23rd, 2025

Pet's info: Cat | Domestic Longhair | Female | spayed | 4 months and 3 days old | 1.9 lbs

Hello, my small kitten roughly 4 month old has a lump on her side on the ribs, it isn't visible as she is long haired, but you can feel it, it's firm but I think it's got liquid in it, im able to move it slightly and it doesn't seem to be causing her any distress when touched / gently squeezed

1 Answer

Most Helpful Answer

Image profile

Answered By Mirissa Duncil, DVM

Veterinarian

Published on September 8th, 2017

Hi and thanks for using Petco Pet Education Center, formerly Petcoach! It could be a small cyst (non cancerous growth) from epidermal origin, or potentially a small abscess that has not yet reached the point of rupture from a sting or bite. If it is possible I would suggest clipping the hair short to get a better look. If you can get a picture, this would help us to better help you out. Likely Freya will need to see a vet for either a drainage of this or a removal if the mass becomes bothersome. Antibiotics will be warranted if the mass ends up being an abscess that is currently brewing under the skin. I hope this helps! Please resubmit if you can get some photos! We'd love to be as accurate as possible.

Vote icon

1Pet Parents found this answer helpful

image
Have A Vet Question?

Book an appointment with the pros – our expert vets are here to help.

Sponsored