Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of chest demonstrate interval placement of a left pectoral single lead cardiac pacer / AICD , with the lead terminating in the right ventricle . Median sternotomy wires are intact . There is no evidence of pneumothorax , vascular congestion , or pleural effusion . There is linear atelectasis in the right base . Cardiomediastinal silhouette is within normal limits .
    OUTPUT:
    
Single cardiac pacer lead terminating in the right ventricle . No pneumothorax .