Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been interval decrease in size of the left - sided pleural effusion from the prior examination . A small , loculated air-fluid level is noted in the region of the resolving left - sided effusion . Stable left - sided mid lung postsurgical changes are again noted . Redemonstrated is a right upper lobe nodule , previously seen on the prior CT chest examination . There is no acute consolidation , pneumothorax , or pulmonary edema . The heart size is normal . The mediastinal contours are normal .
    OUTPUT:
    
1 . Resolving left - sided pleural effusion . 2 . Stable right upper lobe nodule , seen on previous CT chest examination .