Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Fusion devices in the upper thorax are unchanged from the prior examination , incompletely evaluated on today 's study . There are bilateral pleural effusions with associated atelectasis . Underlying infectious process can not be excluded . Cardiac silhouette is not well evaluated in the presence of bilateral pleural effusions .
    OUTPUT:
    
Bilateral pleural effusions with associated atelectasis . Underlying infectious process can not be excluded .