Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Upright portable AP view of the chest was obtained . The patient is rotated to the right . The lung volumes are low . There has been interval increase in right pleural effusion with overlying atelectasis and possible partial collapse of the right lower lobe . Left base opacity with likely pleural effusion persists . There is no pneumothorax . The cardiomediastinal silhouette is partially obscured by overlying opacification caused by the pleural effusion and patient rotation . Possible minimal inferior subluxation of the left humeral head may be positional .
    OUTPUT:
    
1 . Patient rotated to the right and low lung volumes make the exam slightly suboptimal . 2 . Interval increase in right sided pleural effusion and atelectasis . Persistent left base opacity , likely pleural effusion .