Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There relatively low lung volumes . Left mid lung opacity persists in is stable , likely representing atelectasis . Right base opacity persists , also likely representing atelectasis . Previously seen tiny right apical pneumothorax is no longer appreciated . Cardiac and mediastinal silhouettes are stable .
    OUTPUT:
    
Previously seen tiny right apical pneumothorax is no longer seen . Persistent basilar and left mid lung atelectasis .