Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP vie of the chest provided . Compared to prior study , there is interval increase in the amount of left pleural effusion . There is also new left basilar atelectasis , with slight ipsilateral mediastinal shift . Small amount of pleural effusion is seen on the right . Left - sided pleural drainage catheter is in unchanged position . There is no pneumothorax .
    OUTPUT:
    
Increased left pleural effusion compared to prior study from 1 day ago .