Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiograph demonstrates intact median sternotomy wires . Surgical clips project over the left mediastinal border . There is a large right pleural effusion . The left lung appears clear . There is no pneumothorax or evidence of pulmonary edema . Cardiac borders appear stable .
    OUTPUT:
    
Large right pleural effusion .