Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral radiographs of the chest demonstrate a left chest tube in unchanged position since the prior study . The previously noted left apical pneumothorax is slightly improved since the prior examination . Again seen is a small right - sided pleural effusion and a stable moderate left - sided pleural effusion . The heart size , hilar and mediastinal contours are normal . Scoliotic deformity of the spine is unchanged .
    OUTPUT:
    
Slight interval improvement in left apical pneumothorax with stable bilateral pleural effusions .