Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Previously seen opacity in the lingula on the lateral view only has since resolved . The lungs are clear with no areas of focal consolidation . There is no pleural effusion or pneumothorax . Opacity at the left lung base , best seen on the lateral view , is consistent with a small fat - containing Bochdalek 's hernia as noted on the ___ CT torso . Cardiomediastinal silhouette is within normal limits .
    OUTPUT:
    
Resolution of previously seen faint lingular opacity . No evidence of pneumonia .