Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Two views were obtained of the chest . Improved small right and unchanged moderate left pleural effusions are accompanied by basal atelectasis . The lungs are otherwise clear . Moderate cardiomegaly is mildly decreased from previous examination with intact sternotomy wires and valvuloplasty ring noted .
    OUTPUT:
    
Decrease in size of small right and unchanged moderate left pleural effusion with accompanying bibasilar atelectasis .