Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left mid lung opacities have totally resolved . Retrocardiac atelectasis have improved . Cardiomegaly and widened mediastinum are unchanged . Minimal right lower lobe atelectasis are stable . There is no pneumothorax . ET tube is in standard position . NG tube tip is out of view , below the diaphragm
    OUTPUT:
    
Marked improved aeration left mid lung