I had on
e bump like you described on
my left rib near
the sternum. I had a chest x-ray which revieled nothing. I then noticed it was getting larger and I was getting a similar bump on
the next rib down. I had a CT scan, the doctor said I had a minimal residual thymus, but didn't seem to think that was a problem. They seem to think it's up to me if I want to pursue this any further. I live in a fairly small town, so I don
't have 100% faith in the doctors.