Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The large layering right pleural effusion is difficult to compare with the immediate prior study of ___ given differences in patient positioning , semi-erect versus upright . Allowing for the layering affect of semi-upright positioning , it is likely unchanged . Low lung volumes cause bronchovascular crowding with minimal pulmonary edema . There is no significant left - sided pleural effusion . There is no focal consolidation . The cardiomediastinal silhouette is stable .
    OUTPUT:
    
Allowing for differences in patient positioning , likely unchanged large right pleural effusion . Minimal pulmonary edema . No consolidation .