Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Interval placement of left chest tube . Left pleural effusion has decreased . Improved left basilar opacity . No definite pneumothorax . Right PICC line tip near cavoatrial junction . Esophageal stent in place . Radiopaque density in the left lung base , may represent aspirated , or extravasated barium from the esophagus , similar to prior .
    OUTPUT:
    
Decreased left pleural effusion . Decreased left basilar opacity . Radiopaque density in the left lower chest , may represent aspirated or extravasated barium , similar .