Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are improved with decreased bibasilar atelectasis . The bilateral asymmetric more prominent on the left upper lobe opacities has slightly improved over time . There is no pleural effusion or pneumothorax . Mediastinal and cardiac contour are within normal limits . Right subclavian line ends in the lower SVC . Tracheostomy and NG tube are in adequate position .
    OUTPUT:
    
Slight improvement of bilateral opacities in patient with known ARDS . The lung volumes are also improved .