Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been interval removal of the left PICC line . The lungs are well expanded . Opacity in the mid left mid lung is similar to or slightly improved from prior exam , likely representing pneumonia . No new areas of opacity are seen . There is no pleural effusion or pneumothorax . The cardiomediastinal silhouette is unremarkable .
    OUTPUT:
    
Opacity in the left mid lung , similar to or slightly improved from prior exam and likely representing pneumonia .