FINDINGS:
Heart size, mediastinal, and hilar contours are unchanged since the prior
 radiograph in .  There is a new moderate right-sided pleural
 effusion and right basilar atelectasis.  No pneumothorax or evidence of
 pulmonary vascular congestion or edema.

IMPRESSION:
New moderate right-sided pleural effusion and right basilar atelectasis.  In
 the correct clinical setting, superimposed infection cannot be excluded.  No
 evidence of pulmonary vascular congestion or edema.