Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is bibasilar atelectasis . The lungs are mildly hyperexpanded , but otherwise clear without focal consolidation . Mild cardiomegaly is unchanged . The mediastinal and hilar contours are unchanged . There is no pulmonary edema , pneumothorax or pleural effusion .
    OUTPUT:
    
1 . Stable mild cardiomegaly . 2 . No pneumonia .