Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . The hilar and mediastinal contours are unremarkable . The lungs are well expanded and clear . The patient is status post median sternotomy with aortic valve repair . There is a pacer with the leads terminating appropriately in the right atrium and right ventricle . There is an aortic valve prosthesis . There is no pleural effusion or pneumothorax . There are no focal consolidations .
    OUTPUT:
    
No acute abnormalities identified to explain patient 's cough and asthma flare .