Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Left chest wall pacer device is seen with leads extending into the region of the right atrium and right ventricle . The heart appears normal in size . The mediastinal contour is unremarkable aside from atherosclerotic calcifications at the aortic knob . The lungs are clear bilaterally without focal consolidation , large effusion or pneumothorax . Imaged bony structures are intact . No free air below the right hemidiaphragm .
    OUTPUT:
    
No acute findings . Pacemaker appears in good position .