Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: New left lower lobe opacity is associated with volume loss , manifested by posterior displacement of the left major fissure . A left pleural effusion has increased in size , and is now moderate with a likely subpulmonic component . New poorly - defined somewhat nodular opacities have developed in the right upper lobe . Cardiomediastinal contours are stable in appearance except for slight inferior displacement of the left hilum . Small right pleural effusion has slightly increased in size and is associated with adjacent opacity in the right retrocardiac area .
    OUTPUT:
    
1 . New left lower lobe opacity . Rapid development and associated volume loss favor atelectasis over infectious pneumonia . 2 . New poorly defined opacities in right upper lobe , which could represent developing bronchopneumonia or an acute aspiration event . 3 . Moderate left pleural effusion with apparent subpulmonic component . Small right pleural effusion .