What was the outcome of this please? My dog has something similar, just a puffy bigger than a golf ball (Roma tomato) sized "bump" (for lack of a better word). It doesn't hurt her at all and nothing is wrong with her. The feel of it reminds me of when you burst a blood vessel, how it puffs up and is very soft. I'm taking her to the vet in the morning but I'm confused by it today because I can't come up with a idea even of what it could be.