Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a small to moderate right pleural effusion with overlying atelectasis , which appears smaller in size as compared to the prior study given differences in technique . Retrocardiac air - fluid level is most consistent with a hiatal hernia . There is adjacent bibasilar atelectasis . Small scattered calcified nodular opacities in both lungs are likely due to prior granulomatous disease . Core - valve placement . There is no overt pulmonary edema . The right aspect of the cardiac silhouette is difficult to assess due to the right base opacity . Mediastinal contours are grossly stable .
    OUTPUT:
    
Small to moderate right pleural effusion with overlying atelectasis , underlying consolidation is not excluded . No overt pulmonary edema . Hiatal hernia .