Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Median sternotomy wires are intact . Endotracheal tube terminates 3 cm above the carina . Nasogastric tube extends below the diaphragm . Right internal jugular venous catheter is in unchanged position , terminating at the cavoatrial junction . There is stable , severe cardiomegaly . Stable enlargement of the thoracic aorta . Apparent interval increase in size of bilateral , large pleural effusions is likely secondary to semi-erect positioning . No pneumothorax . Stable severe , right convex thoracic scoliosis .
    OUTPUT:
    
Unchanged , bilateral , large pleural effusions .