Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is stable appearance of the left hemithorax status post left pneumonectomy with a large hydropneumothorax . Calcification in the aortic knob are noted . The heart can not be assessed . The right lung remains hyperinflated but clear with no pleural effusion , pneumothorax , or focal consolidation concerning for pneumonia .
    OUTPUT:
    
Stable appearance after left pneumonectomy .