Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are low lung volumes , as on prior exam . Within this limitation , the cardiomediastinal silhouettes , reflective of mild to moderate cardiomegaly . The bilateral hila are within normal limits . An IVC filter projects over the right midline abdomen . The right lower lung opacity is more conspicuous than on prior radiograph . There is right basilar atelectasis . There is no pulmonary vascular congestion . There is no pneumothorax or pleural effusion .
    OUTPUT:
    
1 . Low lung volumes . Worsening left lower lung opacity is concerning for developing pneumonia . 2 . Resolution of right pleural effusion .