Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Mild prominence of the pulmonary vasculature is worsened from ___ . An opacity at the right lung base may represent asymmetric pulmonary edema . No pleural effusion or pneumothorax . Cardiomediastinal contours are normal .
    OUTPUT:
    
1 . Opacity at the right lung base may represent asymmetric pulmonary edema , however underlying pneumonia can not be excluded . 2 . Mild pulmonary edema .