Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Transvenous right atrial and right ventricular lead pacer leads are contiguous with a left pectoral generator . Aortic valve replacement and median sternotomy wires are again noted . The lungs are clear without focal consolidation . No pleural effusion or pneumothorax is seen . The cardiac and mediastinal silhouettes are unchanged .
    OUTPUT:
    
Pacer leads in expected positions with no evidence of pneumothorax or pleural effusions .