Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Interval withdrawal of chest tube by several centimeters . Median sternotomy wires intact and aligned . Unchanged mild cardiomegaly . Stable small left pleural effusion . Minimal left chest wall subcutaneous emphysema . Stable retrocardiac opacity reflects left basilar atelectasis .
    OUTPUT:
    
Interval withdrawal of chest tube , otherwise appearance of heart and lungs is unchanged .