Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is mildly enlarged , not significantly changed from the prior study , allowing for AP technique . Intact median sternotomy wires , mediastinal clips , left chest wall pacemaker device with leads terminating in the right atrium and right ventricle , and right axillary vascular clips are unchanged compared to the prior . The lungs are relatively well expanded and clear . No large pleural effusion , overt pulmonary edema , or focal airspace opacity is identified . There is no pneumothorax .
    OUTPUT:
    
Stable cardiomegaly . No evidence of pneumonia .