Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs redemonstrate multiple intact sternotomy wires and an unchanged cardiomediastinal silhouette . Coronary calcifications and scoliosis are again seen . The moderate to large left pleural effusion has increased over the past 2 weeks . There is unchanged mild atelectasis of the right base . There is no pneumothorax .
    OUTPUT:
    
Interval increase of a moderate - to - large left pleural effusion .