Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The right - sided pleural effusion has significantly decreased in size and there is no pneumothorax . There is now an elevated left diaphragm , perhaps due to increased atelecatsis . No focal opacities concerning for an infectious process .
    OUTPUT:
    
No evidence of pneumothorax . Newly elevated left hemidiaphragm , perhaps due to increased atelectasis .