My cat has a lump under her nipple. Is it serious? What's next?

Question

Have recently found a small round cystlike growth under my cats nipple. She is coming on heat but other than that is very well. But very worried. I'm checking everyday to see if it gets bigger been 4 days now what should I do and is it serious? Pet's info: Cat | Mixed Breed | Female | unspayed | 5 years and 11 months old

Jennifer Summerfield, DVM CPDT-KA · Accepted Answer

In an unspayed female cat, the most worrisome possibility with any kind of growth or lump in this area is a mammary tumor - these are unfortunately very common in cats. It's also possible that it could be something less serious, such as a cyst or localized infection of some kind. Even if it doesn't seem to be getting bigger, I would still recommend taking her to the vet to have this checked as soon as you are able to - if it is a tumor, removing it while it's still small will give her the best chance of a good outcome.

My cat has a lump under her nipple. Is it serious? What's next?

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