That's what I though after reading your post. Try to get a PET scan asap.
Keep us posted.
I would consider the bone scan the most accurate. Cancer detected in a rib/bone is NOT good. You might want to discuss with your Oncologist about getting a PET scan for a final confirmation.
What is your staging: IIIA, IIIB?
The bone scan, x-rays and blood tests were all done recently.
Confused. The bone scan was done recently? The x-rays of the ribs were done last year?
The "blood tests and markers" were done when?
Secondly, I would take a bone scan reading over an x-ray reading.