Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Linear opacities in the right lung base appear unchanged compared to prior and likely represent areas of scarring . The remainder of the lungs appear clear . There is no focal consolidation or pneumothorax . There is no vascular congestion or pleural effusions . Mild elevation of the left hemidiaphragm is unchanged from prior . Rightward deviation of the trachea is stable and consistent with patient 's known thyroid goiter . Mediastinal and hilar contours are within normal limits . Mild - to - moderate enlargement of the cardiac silhouette is unchanged .
    OUTPUT:
    
No evidence of acute cardiopulmonary process .