Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The moderate right and moderate to large left pleural effusions have slightly increased since ___ and markedly increased since ___ . There is bibasilar atelectasis . The upper lungs are clear . There is no pleural effusion or pneumothorax identified . The aortic knob is calcified . The cardiac contours are not well seen .
    OUTPUT:
    
Moderate right and moderate to large left pleural effusions have slightly increased since ___ and markedly increased since ___ .