Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral radiographs of the chest demonstrate well expanded , clear lungs . The cardiac silhouette remains moderately enlarged , unchanged . The hilar contours are stable . There is no pneumothorax , pleural effusion , or focal consolidation . Note is made of a hiatial hernia .
    OUTPUT:
    
No acute cardiopulmonary process .