Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Again seen is a right upper lobe opacity , similar to ___ examinations . There is subtle increase in opacity at the right and left lung bases , possibly reflecting atelectasis , though underlying new consolidations can not be entirely excluded . There is no pneumothorax or pleural effusion . The cardiac and mediastinal contours are unchanged .
    OUTPUT:
    
1 . Unchanged right upper lobe opacity . If this does not resolve following treatment , a CT examination should be considered . 2 . New subtle right and left bibasilar opacities likely reflect atelectasis , though early consolidations can not be excluded .