Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA AND LATERAL VIEWS OF THE CHEST . The previously seen bilateral interstitial opacities are no longer visible . The lungs are grossly clear . There are no pleural effusions or pneumothorax . The cardiac , mediastinal , and hilar contours are normal .
    OUTPUT:
    
No acute cardiopulmonary abnormality .