Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are small - to - moderate sized bilateral pleural effusions and associated basilar opacities , larger on the left than the right . These opacities may represent compressive atelectasis , though a component of infection is difficult to completely exclude . Additionally , there is mild vascular congestion . No pneumothorax is identified . The mediastinal contours are unchanged , and normal . Atherosclerotic calcifications are noted along the aortic arch . The heart is moderately enlarged . It appears slightly increased in size since the prior exam . Otherwise , there has been little change .
    OUTPUT:
    
1 . Small - to - moderate sized bilateral pleural effusions . 2 . Bibasilar consolidations , larger on the left from the right , which may represent compressive atelectasis , though a component of infection can not be completely excluded . 3 . Mild vascular congestion . 4 . Cardiomegaly .