I had a masectomey 3/13/2009, then chemo(CMF). During chemo i fell and broke several ribs in august of last year. I had a pet scan in May of this year, ordered due to hip bone pain and the radiologist states that he thought it was possible arthritis in the ribs. I have IDC. T2N1M0, state III. My Question, is it possible to get arthritis that quick? and can it be mistaken on the PET scan?