Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been interval removal of the spinal hardware . The aortic stent graft is again visualized . There increased bilateral pleural effusions layering posteriorly , left much larger than right . There is volume loss at both bases . Drains overlie the upper thorax bilaterally .
    OUTPUT:
    
Postop changes with increased bilateral effusions left greater than right .