Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right chest wall port is again seen . There is an approximately 1 .8 cm nodular opacity projecting over the left lung laterally overlying the anterior left fourth rib . There is no correlate a finding on the lateral view . The lungs are otherwise clear . The cardiomediastinal silhouette is within normal limits .
    OUTPUT:
    
Nodular opacity projecting over the left lateral lung . This correlates with pleural - based opacity described on subsequent CTA chest .