Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Moderate left pleural effusion is new . It is impossible to exclude a pneumonia underlying it . There is also new mild pulmonary edema . Moderate cardiac contour enlargement has worsened since previous exam , and there is also dilation of the azygos vein . There is no pneumothorax .
    OUTPUT:
    
1 . New left moderate pleural effusion . 2 . It is impossible to exclude a pneumonia underneath the pleural effusion . 3 . Mild pulmonary edema .