Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well - expanded , with minimal atelectasis or scarring in the right lung base . There is no pleural effusion comp pulmonary edema , pneumothorax , or focal airspace consolidation . Irregularity of the posterior eighth rib is again seen , unchanged since the prior study .
    OUTPUT:
    
No acute cardiopulmonary abnormality .