Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy as well as pacemaker placement with leads terminating in right atrium and ventricle . There is also a aortic valve prosthesis . The heart size remains normal . There are no focal opacities concerning for an infectious process . No pleural effusion and no pneumothorax .
    OUTPUT:
    
No evidence of acute intrathoracic process .