Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were obtained . Midline sternotomy wires and the mediastinal clips are compatible with prior CABG . A right chest wall pacer device is present with dual leads extending into the expected location of the right atrium and right ventricle . The heart is within normal limits of size . No focal consolidation or signs of CHF . No pleural effusion or pneumothorax is seen . The mediastinal contour is normal , though calcification along the aortic knob is noted . The bony structures appear intact . Right AC joint arthropathy is again noted .
    OUTPUT:
    
No acute intrathoracic process .