Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single frontal view of the chest . Left PICC terminates at the superior cavoatrial junction . Internal drainage CBD catheter , CBD stent , and percutaneous cholecystostomy tube are stable . Known right pleural effusion is distributed in a slightly different configuration on today 's exam , but the overall volume of effusion is unchanged . The left lung is clear . No pneumothorax .
    OUTPUT:
    
Moderate sized right pleural effusion , similar to prior .