my unspayed female cat has a large lump on her chest. It's hard to say how big exactly, around the size of a ping pong ball I think. It seems to be right under her teat, but I don't know if it's related. She doesn't have any cuts or noticeable wound, is not scratching or licking any more than usual. This lump was not there a few days ago. It does not move, and does not seem tender. She is acting totally normal.
Any ideas? I know we should just go to the vet but if I need to be sure its necessary because the expense is a problem (also why she hasn't been spayed yet.)
Unspayed females are at a high risk of mammary tumours (breast cancer). I would bring her in to be checked. Check along the other teats for swelling as well. Often it starts along one side then the other. A fine needle aspirate would likely be done then cytology will be analysed. If warranted the mass should be removed and sent for a histology.
Sadly, Jan 21, 2011 m/c 6w5d
Just wanted to update:
The lump turned out to be a hernia. It didn't seem to bother her but she had it fixed while she was getting spayed a few days ago and all is well.