Replied by Krazy4kilts (Syracuse, Utah) on 10/29/2011
Did you ever find out what this mass was?Replied by Lizzie (Mays Landing, Nj Us ) on 02/16/2012
My cat had the same thing before. It got larger over time and one day she came home and it was popped and all bloody. I guess eventally it pops on it's own. We then helped her to clean it out with a washrag and she was fine afterwards, the fur grew back and everything healed. But now my other cat has the same thing, I guess that's what happens with outside cats. My best guess would be that it got punctured or got something stuck in it, maybe in a fight, and infection took place. I would suggest you let nature take it's course. Good luck.