Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy and coronary artery bypass surgery . Cardiomediastinal widening is stable in the postoperative period . Moderate partially loculated left pleural effusion is again demonstrated , and has slightly decreased in size overall . However , an intrafissural component has increased . On the right , a small - to - moderate pleural effusion has slightly increased in size and may be slightly loculated laterally . Increased opacity in the retrosternal space is consistent with known postoperative fluid collection as seen on recent CT of ___ . Bibasilar atelectasis adjacent to the pleural effusion is noted .
    OUTPUT:
    
Bilateral partly loculated pleural effusions and retrosternal fluid collection .