Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left lung atelectasis has significantly improved with only minimal residual volume loss at the lung base . Mild pulmonary congestion is unchanged . Left subclavian line ends at the junction of superior vena cava and brachiocephalic vein . There is no pneumothorax . Bilateral pleural effusions are small .
    OUTPUT:
    
1 . Significant improvement of left lung atelectasis . 2 . Unchanged mild pulmonary edema .