A 41 year old man had a routine chest x-ray done as part of his medical check up.Look at the x-ray above. There is an opacity in the right upper zone overlying the right 6th posterior rib. Is this a lung nodule or callus formation from an old fractured rib?
Not sure? Look at the magnified image below:
The nodule doesn't exactly overlie the 6th rib. Thus, it is unlikely to be bone callus.
The nodule has inhomogenous density and irregular margin.
Bronchial carcinoma is a strong possibility.
The next course of action would be to do CT chest and bronchoscopy.