Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were provided . A left rib cage deformity is again noted . There is a subtle opacity projecting over the left lateral mid lung which could reflect pleural thickening subjacent to the extensive rib deformity . This finding is essentially unchanged from multiple prior exams . No focal consolidation , effusion , or pneumothorax is seen . The cardiomediastinal silhouette is stable . The left clavicular mid shaft appears fractured , appearing new from prior exam though suboptimally assessed . Clinical correlation is advised . Left rib cage deformity is again noted .
    OUTPUT:
    
1 . Stable opacity in the left mid - to - lower lung underlying the rib cage deformity likely represents pleural thickening and scarring which appears unchanged from multiple prior exams . 2 . Apparent left mid clavicular shaft fracture , question new injury from prior exam . Please correlate clinically . 3 . No evidence of right lower lobe pneumonia .