Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to ___ , there appears to be an increase in the right pleural effusion with fluid in the minor and possibly major fissure ; however , this may be related to change in positioning . No definitive sign of loculated effusion . No pneumothorax . Bilateral pulmonary edema with enlarged heart appears unchanged . Mediastinal contour appears unchanged . Prosthetic heart valve again seen in correct position .
    OUTPUT:
    
1 . Possible increase in size of right pleural effusion , however may be positional . No definitive evidence of loculation , however this is difficult to exclude on plain frontal radiograph . A lateral view would be helpful if the condition of the patient permits . A right lateral decubitus radiograph could demonstrate the extent of free pleural fluid . Nevertheless , to definitely determine whether there is a loculated fluid collection , CT would be necessary , especially since the appearance could be compared with the study of 1 week previously . 2 . Pulmonary edema appears unchanged . Results were conveyed via telephone to Dr . ___ by Dr . ___ ___ on ___ at 11 :30 a .m . within 10 minutes of results .