Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable view of the chest . Lower lung volumes seen on the current exam . There is increase in degree of the opacity at the right lung base likely due to pleural effusion with underlying atelectasis , noting infection is not excluded . There is also a small left pleural effusion , new since prior . Retrocardiac opacity is in part due to known hiatal hernia . The cardiac silhouette is enlarged , similar to prior . Core-valve is also seen , similar to prior . Degenerative changes seen at the shoulders .
    OUTPUT:
    
Right basilar opacity compatible with pleural effusion and likely atelectasis , noting infection can not be excluded . It appears increased in degree when compared to prior . New left - sided effusion .