Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is mild bibasilar atelectasis with no evidence of a focal consolidation . The lungs appear hyperexpanded and lucent suggestive of underlying chronic obstructive pulmonary disease . There is no pleural or pericardial effusion . The heart appears mildly enlarged . A large hiatal hernia is again noted .
    OUTPUT:
    
1 . No acute cardiopulmonary process . 2 . Large hiatal hernia .