Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A single semi-upright portable radiograph of the chest is obtained . The lungs are well - areated and clear . There is mild cardiomegaly . The hilar contours are unremarkable . There is no pneumothorax .
    OUTPUT:
    
1 . Mild cardiomegaly . 2 . No evidence of pneumonia .