Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours appears stable . A Bochdalek hernia containing colon is noted in the posterior left upper quadrant , similar to prior findings . Surgical clips project over the epigastrium . There is no definite pleural effusion or pneumothorax . There is a similar background mild interstitial abnormality unchanged since the earlier prior study .
    OUTPUT:
    
No evidence of acute cardiopulmonary disease .