Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post removal of the left upper chest tube with a small , about 7 - mm left apical pneumothorax . The cardiomediastinal silhouette and hila are normal and unchanged . The left basilar atelectasis has improved . Stripe - like right basilar atelectasis remains . There is unchanged subcutaneous emphysema at the left lower lateral chest wall from previous chest tube insertion .
    OUTPUT:
    
Small left apical pneumothorax after chest tube removal .