Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . The aorta is mildly unfolded . The mediastinal and hilar contours are otherwise unremarkable . There is no pulmonary vascular congestion . Lungs are clear without focal consolidation . No pleural effusion or pneumothorax is demonstrated . No acute osseous abnormality is detected .
    OUTPUT:
    
No acute cardiopulmonary process .