Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a small right and possible small left pleural effusion . Superimposed bibasilar opacities may be secondary to atelectasis , infection not excluded . Indistinct pulmonary vascular markings with mild edema is also noted . Cardiac silhouette is difficult to assess given silhouetting bilaterally .
    OUTPUT:
    
Small bilateral pleural effusions and bibasilar opacities likely atelectasis , infection difficult to exclude . Mild pulmonary edema .