Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: In comparison to the chest radiograph obtained 1 day prior , there has been interval placement of a left - sided chest tube with a substantial decrease in the left pleural effusion , now small with some associated lower lobe atelectasis . Both lung volumes are low and multiple right perihilar nodular opacities are again demonstrated . No pneumothorax . A right - sided PICC terminates in the lower SVC .
    OUTPUT:
    
Substantially decreased , now small , left pleural effusion status - post left chest tube placement . No pneumothorax .