Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart appears mildly enlarged . Even allowing for portable AP technique , the heart is probably larger than on the prior examination . The lungs appear clear . There is a small eventration of the right hemidiaphragm . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Mild cardiomegaly . No evidence of acute cardiopulmonary disease .