Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest are obtained . Since the prior study , the size of the hernia sac has significantly decreased . The bilateral lungs are better expanded with some evidence of mild atelectasis of the left lung adjacent to the hernia sac . There is no focal consolidation , pulmonary edema , or pneumothorax . There is no significant pleural effusion . The heart size is normal .
    OUTPUT:
    
Marked interval improvement in size of hernia sac as well as improvement in bilateral lung aeration with minimal atelectasis in the left lung . No acute cardiopulmonary disease .