Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs remain hyperinflated . There is slight blunting of the bilateral costophrenic angles which may be due to trace pleural effusions . No pneumothorax is seen . The cardiac and mediastinal silhouettes are stable . Multiple old right - sided rib fractures are re - demonstrated . There is also prominent costochondral calcifications .
    OUTPUT:
    
Slight blunting of the posterior costophrenic angles may be due to trace pleural effusion .