An ovoid opacity measuring 5 x 10 mm is seen projecting over the left second anterior rib on the PA view with a correlate on the lateral view. This may represent a sclerotic focus within the rib or a pulmonary nodule. In the absence of prior imaging for comparison, a follow-up chest CT in 3 months is recommended per Fleischner Society guidelines.
Nodule/Solitary lung nodule (Uncertain)