Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are hyperexpanded and the diaphragms are flattened . The cardiomediastinal silhouette is unchanged , without frank cardiac enlargement . Again seen are are intact median sternotomy wires with mediastinal clips . Within the limits of plain film radiography , no hilar or mediastinal lymphadenopathy is detected . No CHF , pleural effusion or pneumothorax . Minimal atelectasis or scarring at the right lung base is unchanged . The extreme right costophrenic angle is excluded from the film .
    OUTPUT:
    
No acute pulmonary process . No significant change compared with ___ .