Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral radiographs of the chest show clear lungs with mild flattening of the diaphragms and slightly hyperinflated lungs consistent with COPD . The heart and mediastinum are normal . A tortuous aorta is noted . No pleural abnormalities seen .
    OUTPUT:
    
No acute cardiopulmonary process . No evidence of increased interstitial markings .