Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to the most recent prior chest radiograph of ___ , there has been an interval decrease in lung volumes and interval development of bibasilar patchy airspace opacities . The cardiac and mediastinal contours are stable . Mild pulmonary vascular congestion is present and probable trace bilateral pleural effusions . There is no pneumothorax . Surgical clips project over the left upper abdomen .
    OUTPUT:
    
Interval development of left greater than right bibasilar opacities , possibly atelectasis , but aspiration or pneumonia can not be excluded . Mild pulmonary vascular congestion and probable trace bilateral pleural effusions .