Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient is status post left upper lobectomy with secondary postoperative changes and left - sided volume loss . The right lung remains clear . The cardiomediastinal silhouette is within normal limits . No acute osseous abnormalities identified .
    OUTPUT:
    
Expected postoperative changes of left upper lobectomy without superimposed acute cardiopulmonary process .