Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Lung volumes are low limiting assessment . Bibasilar opacities are noted which could represent atelectasis and / or pneumonia . Opacity at the right lung base appears slightly progressed from the prior radiograph . There is blunting of the right CP angle likely reflecting a small pleural effusion . The cardiomediastinal silhouette is stable . No pneumothorax . Crowding of bronchovascular markings at the perihilar region limits evaluation for congestion . No overt edema . Bony structures are intact .
    OUTPUT:
    
Low lung volumes with bibasilar opacities likely reflecting atelectasis and / or pneumonia . Small right pleural effusion .