Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: In comparison with chest radiograph from ___ , there is mildly increased pulmonary vascular congestion . Again seen is a retrocardiac opacity in the left base silhouetting the left hemidiaphragm , consistent with round atelectasis as seen on chest CT from ___ . Small left pleural effusion . Moderate cardiomegaly is unchanged .
    OUTPUT:
    
1 . Mild interval increase in pulmonary vascular congestion . 2 . Re-demonstrated left basal opacity silhouetting the left hemidiaphragm , consistent with round atelectasis as seen on prior CT from ___ . 3 . Small left pleural effusion . 4 . Stable moderate cardiomegaly .