Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Spinal fusion hardware is unchanged in position . A right pigtail catheter at the right lower lung is new . Lung volumes are unchanged . The right pleural effusion is not appreciably changed over approximately 8 hours . Plate - like atelectasis is again seen at the left base . A hiatal hernia is redemonstrated . There is no pneumothorax .
    OUTPUT:
    
Interval placement of right pigtail catheter without appreciable change in pleural effusion and no pneumothorax .