Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are low and linear opacities at the bases most likely represent atelectasis . Otherwise there is little change . There is no focal consolidation to suggest pneumonia . There is no pulmonary edema . The small subpleural nodule seen on the prior CT of the chest are not well visualized on today 's exam . There are small bilateral pleural effusions . No pneumothorax is identified . The cardiomediastinal silhouette is normal . A metallic biliary stent is present in the right upper quadrant .
    OUTPUT:
    
Small bilateral pleural effusions and bibasilar atelectasis . No definite pneumonia .