Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette is normal in size . Slight prominence of the main pulmonary artery may be projectional . The mediastinal contours are otherwise unremarkable . The hila are unremarkable . There is no pleural effusion or pneumothorax . The lungs are well expanded and clear without focal consolidation . Surgical clips are noted in the right upper quadrant . The remainder of the upper abdomen is unremarkable .
    OUTPUT:
    
No acute cardiopulmonary process .