Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been no interval change since the study obtained approximately 2 hr earlier . Mild enlargement of cardiac silhouette is re - demonstrated . The aorta remains unfolded . Pulmonary vasculature is normal . Lungs are clear . No pleural effusion or pneumothorax is seen . Old right - sided rib fractures are again seen . Partially imaged is fusion hardware within the cervical spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality .