Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is mildly enlarged , unchanged compared to the prior exam . The hilar and mediastinal contours are unremarkable . The lungs are well expanded and clear . There is no evidence of pleural effusion or pneumothorax . The visualized osseous structures are unremarkable .
    OUTPUT:
    
No acute cardiopulmonary abnormalities . Specifically , no evidence of pneumothorax . These findings were discussed with Dr . ___ at 4 :50 p .m . by Dr . ___ ___ by telephone on the day of the exam .