My boy Stomps, who I guess is about 12 now (he was a rescue so age is not known), developed what appeared to be a liquid-filled lump right on his back knee. Although he's had fluid-filled lumps before (which I had surgically removed), the fact that this one was right over a joint worried me. So I took him to the vet. The vet said it was probably a lipoma and we might as well just take it out. No aspiration, no biopsy, just whisk him into surgery. At first I agreed, but the more I thought about it, the more bothered I became. While I am concerned about what these lumps are (he found something on Stomps' chest that I still can't feel), I think subjecting a dog of his age to general anesthesia without doing less invasive tests first--especially when the vet feels certain these are not life-threatening lumps--is not in the dog's best interest. The veterinarian is supposed to call me to discuss, and I'd like to be as educated on this as possible before I make a decision. What are your thoughts/opinions/experiences? Thanks!