Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A left pectoral permanent pacer is in place with a single ICD lead terminating in the right ventricle . The course of the lead is unremarkable . The lungs are clear without focal consolidation , pleural effusion or pneumothorax . The pulmonary vasculature is not engorged , and there is no overt pulmonary edema . The cardiac silhouette is mildly enlarged but stable . The mediastinal and hilar contours are within normal limits .
    OUTPUT:
    
Status post RV lead replacement without pneumothorax or pleural effusion .