Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A left pectoral pacer device with single lead terminating in the right ventricle is unchanged . The inspiratory lung volumes are appropriate . The lungs are clear without focal consolidation , pleural effusion or pneumothorax . The pulmonary vasculature is not engorged . The cardiomediastinal and hilar contours are stable with mild to moderate cardiomegaly . No acute osseous abnormality is detected .
    OUTPUT:
    
No acute cardiopulmonary process . Stable mild to moderate cardiomegaly .