Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volume is low . Right lung base opacity is similar to before consistent with right lower lobe collapse and pleural effusion . Enlarged right hilum is unchanged . Cardiomediastinal silhouette is normal size . Gastric air is noted under the left hemidiaphragm . No evidence of pneumoperitoneum is identified .
    OUTPUT:
    
No evidence of pneumoperitoneum . No notable interval change .