Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral radiographs of the chest show no focal consolidation , unchanged from the preceding radiograph . The lungs are clear without pleural effusion or pneumothorax . The pulmonary vasculature is not engorged . The cardiac silhouette is normal in size . The mediastinal and hilar contours are within normal limits and unchanged from ___ .
    OUTPUT:
    
No acute cardiopulmonary process , unchanged from ___ .