I should start with the day OSA was mentioned. We had brought Rylie in to the vet to check on limp. This wasn’t happening long but we had previously had 2 dogs with TPLO’s so if it was a torn ACL , we wanted to get a jump on it. She had her leg up for 1 day and then gradually over the weekend it was coming back down to a mild toe touch.. The vet didn’t feel anything in her knee that was an issue. So we went home with Rymidal and rest for 2 weeks later she was occasionally toe touching so we decided on next step was the sedated x-rays. When I picked Rylie up my vet was like great news all looks well. No worries, Radiologist will review by she felt confident there were no issues. I was glad we took the extra measure to check and got home and let her run out in backyard. Within 2 hours my vet had called back apologizing and saying that the radiologist saw a less dense area in the bone of her rear left leg. Less Dense what did that mean? My vet said Cancer. I was sure she was wrong.