Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . Postoperative changes of left - sided pneumonectomy are seen with left - sided volume loss and complete opacification . The right lung is clear . Atherosclerotic calcifications are noted at the aortic arch . No acute osseous abnormality is identified .
    OUTPUT:
    
Expected postoperative changes of left pneumonectomy without definite acute cardiopulmonary process .