Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Inspiratory and expiratory PA and lateral radiographs of the chest demonstrate a small right apical pneumothorax which slightly increases in size on the expiratory images . There is no evidence of tension . Bilateral lower lobe atelectasis and small right pleural effusion persists . The heart size is stably enlarged . The lungs are otherwise clear .
    OUTPUT:
    
Small right apical pneumothorax after removal of chest tube .