I know I haven't been on here in awhile, but I thought I'd give an update. We took Louie to a new vet today (I just didn't like his old one), and we found out that the lump on his leg is a connective tissue tumor that needs to be removed.
The vet says this is a simple procedure and that even if it's not benign, it probably won't come back after removing it, but I'm still worried. Has anyone else ever dealt with this procedure?
Another thing we found out, which was nice to know, is that his LP is only between a level 1 and 2. The vet thinks he won't have any problems with it, so that's good news!