Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Chronic right - sided pleural effusion is unchanged . Adjacent atelectasis as well as fluid in the fissure is noted . Cardiac silhouette is normal in size . There is no evidence of pneumonia . While there may be some upper zone redistribution of the vasculature , there is no overt pulmonary edema .
    OUTPUT:
    
Stable right pleural effusion . No evidence overt failure however slight redistribution of the vasculature .