Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Moderate cardiomegaly and large mediastinal fat pad , unchanged in appearance from ___ . The aorta is tortuous . Lung volumes are somewhat low . A chronic appearing interstitial abnormality is stable in appearance likely related to underlying COPD . No focal consolidation or pneumothorax . No pleural effusions .
    OUTPUT:
    
Chronic interstitial abnormality is stable in appearance . No focal consolidation to suggest pneumonia . Moderate cardiomegaly is stable .