Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A left - sided pectoral pacemaker is noted with leads terminating within the right atrium and ventricle , respectively , unchanged as compared to ___ . The lungs demonstrate no focal consolidation , pleural effusion , pneumothorax , or frank pulmonary edema . The cardiomediastinal silhouette is unchanged from the prior examination .
    OUTPUT:
    
Appropriately positioned dual lead left pectoral pacemaker . No acute intrathoracic process .