Please Please PLEASE send the xrays to Dr, Couto! A few years ago Loca was in a similar situation, without the break. The vet wasn't sure if it was chondrosarcoma (another form of bone cancer) and the radiologist thought it was. We sent the results to Dr. Couto, they said the radiologist mistook normal lung superimposed over bone for cancer. We took a second set, sent them to OSU, and same thing...cancer free!! If there's any doubt at all, please send the results to OSU. In the meantime, take a deep breath and remind yourself that you're doing the best you can with Dude