Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is redemonstration of a pleural - based opacity in the right lower lung which appears stable from prior examination and likely reflects a loculated pleural effusion . There is rightward shift of midline structures likely due to chronic atelectasis and continued volume loss at the right lung base . There is a new small left sided pleural effusion . The heart is mildly enlarged and there is new mild pulmonary vascular congestion .
    OUTPUT:
    
New small left pleural effusion and mild pulmonary vascular congestion . Stable posteriorly loculated moderate size right pleural effusion and atelectasis of the right lung base .