Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well - inflated and grossly clear . There is no pleural effusion , or pneumothorax . The hilar contours are normal . Mild cardiomegaly is unchanged . Mild degenerative change of the thoracic spine is unchanged from prior .
    OUTPUT:
    
1 . No pneumonia . 2 . Mild cardiomegaly is unchanged from prior .