Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since the prior chest radiograph performed on ___ , there is new or increasing left pleural effusion . No sizable pleural effusion on the right . No pneumothorax . Right lung is essentially clear . Dense multifocal opacities along the medial aspect of the entire left hemithorax are better demonstrated on the prior chest CTA . Mild cardiomegaly .
    OUTPUT:
    
New or increasing left pleural effusion .