Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are hyperinflated . There is an opacity projecting over one of the lower thoracic vertebra on the lateral view with an apparent correlate on the frontal view , which may represent atelectasis , but left lower lobe pneumonia should be considered the appropriate clinical setting . No pleural effusions or pneumothorax . Mildly prominent interstitial markings are probably related to chronic lung disease . The cardiomediastinal silhouette is within normal limits . Surgical clips are noted in the right upper quadrant .
    OUTPUT:
    
Left lower lobe opacity , which may represent atelectasis , but pneumonia should be considered in the appropriate clinical context .