Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A left pectoral dual - chamber pacemaker has been placed with dual leads terminating in the right atrium and right ventricle . The right ventricular lead is oriented superiorly with the tip projecting towards the free wall of the right ventricle . The course of the leads is unremarkable . The lungs are clear without focal consolidation , pleural effusion , or pneumothorax . There is no overt pulmonary edema . The cardiomediastinal and hilar contours are within normal limits .
    OUTPUT:
    
Status post pacemaker placement without pneumothorax .