Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is top normal . Mediastinal and hilar silhouettes are unchanged . No larger pleural effusions . No focal consolidation or pneumothorax . No free air under the diaphragm .
    OUTPUT:
    
1 . Similar chest radiographic appearance since ___ . No acute cardiopulmonary process . 2 . No free air under the diaphragm .