Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild cardiomegaly is similar to prior . Calcification of the aortic knob mediastinal contours appear stable . Moderate bilateral pleural effusions have enlarged since the prior exam and bibasilar opacities may be due to atelectasis , infection , or aspiration . There is mild background pulmonary vascular congestion . Thoracic spine compression deformities are stable .
    OUTPUT:
    
Moderate bilateral pleural effusions with bibasilar opacities which may be due to atelectasis , infection , or aspiration . Pulmonary vascular congestion .