Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Again noted is a single lead pacemaker with the generator in the right axilla and lead ending in the left ventricle . A tracheostomy tube is present . There are bilateral pleural effusions , left worse than right , with underlying atelectasis . Dense retrocardiac opacity might also be due to atelectasis , but an infectious / inflammatory process can not be excluded . The aorta is tortuous , but the cardiomediastinal and hilar contours are unremarkable otherwise . There is no evidence of pneumothorax .
    OUTPUT:
    
Bilateral pleural effusion with bibasilar atelectasis . Infectious process can not be excluded .