Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable AP chest radiograph was provided . The right hemithorax is incompletely imaged . A left sided central line is identified , it s tip which projects over the made superior vena cava . Two right pleural drains have been slightly withdrawn . Side ports are excluded from the few . A large right pleural effusion is unchanged in size relative to prior examination . There is no left pleural effusion . There is no pneumothorax . Cardiomediastinal silhouette is stable . Patient is status post median sternotomy , tricuspid and mitral valve replacement . Imaged osseous structures and upper abdomen are without an acute abnormality .
    OUTPUT:
    
Large right pleural effusion not significantly change relative to prior study . Two right pleural drains are identified though are incompletely imaged . Repeat radiograph or clinical correlation is advised to confirm placement of side port within the pleural space .