Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiographs ___ at 13 : 17 are submitted .
    OUTPUT:
    
Interval placement of a single lead left - sided pacer with the lead terminating over the expected location of the right ventricle . Status post median sternotomy with stable postoperative cardiac and mediastinal contours . Lungs appear well inflated without evidence of focal airspace consolidation , pleural effusions , pulmonary edema or pneumothorax .