Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . This accentuates the size of the cardiac silhouette which is mildly to moderately enlarged . Mediastinal and hilar contours are unremarkable except for the presence of a moderate size hiatal hernia . The pulmonary vasculature is not engorged . No focal consolidation , pleural effusion or pneumothorax is present . No acute osseous abnormality is detected .
    OUTPUT:
    
No acute cardiopulmonary abnormality . Moderate size hiatal hernia .