Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac size is normal . There is blunting of the AP window , this warrants further evaluation with CT The lungs are clear . There is no pneumothorax or pleural effusion . The osseous structures are unremarkable
    OUTPUT:
    
No acute cardiopulmonary abnormalities . Obliteration of the AP window , these warrants further evaluation with CT