We were at the vet today with our dog she is 10 years old and has been limping for about 2-3 weeks now we thought that she just might have sprained her paw. Her x-rays came back fine, but they did find a lump on her shoulder, they are operating on it tomorrow to see if is is an abscess the vet said he has not seen anything like this before. Has anyone experienced anything like this before and what was the outcome