Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Abandoned pacer leads are again seen overlying the left chest wall . The lungs are clear . There is no focal consolidation or pneumothorax . There is no vascular congestion or pleural effusions . Mediastinal and hilar contours appear within normal limits . Mild cardiomegaly is unchanged from prior . Median sternotomy wires appear grossly intact . There is no subdiaphragmatic free air .
    OUTPUT:
    
No acute cardiopulmonary process . No free air .