Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy with valve replacement . Retained epicardial pacer leads remain in place . Mild mammilation of the right hemidiaphragm is unchanged . The lungs are mildly hyperinflated but clear . Mediastinal contours are stable , and there is no radiographic evidence of lymphadenopathy . Mild cardiomegaly is unchanged . A tortuous descending thoracic aorta is also unchanged .
    OUTPUT:
    
No evidence of lymphadenopathy . Clear mildly hyperinflated lungs . Stable mild cardiomegaly .