Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate a normal cardiac silhouette . Slightly unfolded aorta with otherwise unremarkable mediastinal and hilar contour . The lungs are well - aerated without focal consolidation , pleural effusion , or pneumothorax . The visualized upper abdomen is unremarkable without evidence for sub - diaphragmatic free air .
    OUTPUT:
    
No acute cardiopulmonary process .