Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left apical pneumothorax is unchanged measuring 2 .1 cm . Small left pleural effusion is now replaced by a small component of pneumothorax . The right lung is unremarkable with known right apical bulla . Chest tube projects in the mid hemithorax .
    OUTPUT:
    
1 . Unchanged moderate left apical pneumothorax . 2 . Small left pleural effusion at the lateral costodiaphragmatic angle is now replaced by a small pneumothorax .