Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are bilateral pleural effusions and associated compressive atelectasis , moderate on the right , small on the left , which appear to have slightly increased compared to the prior examination , however this may be positional . The lungs are otherwise clear . The cardiomediastinal silhouette is stable . The pulmonary vasculature is normal . No pneumothorax is seen .
    OUTPUT:
    
Slightly increased bilateral pleural effusions and atelectasis , right greater than left , which may be positional .