Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral images of the chest demonstrate a pacer in position in the left anterior axillary position with intact leads along the expected course to the right atrium and right ventricle . There is no pneumothorax or other complication seen . The lungs are well expanded and clear . There is no pleural effusion . Mild cardiomegaly is again seen . A thin paratracheal stripe is visualized . The opacity to the right of the trachea is consistent in appearance with vascular structures in this region and is not of concern . Thoracic scoliosis is again noted .
    OUTPUT:
    
Pacer in appropriate position . Otherwise , unremarkable chest radiographs .