Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are slightly low . Subcutaneous gas identified on prior exam has resolved . Postoperative changes of thoracotomy seen on the right . Chain sutures seen at the lateral aspect of the right mid lung with density laterally within lung potentially due to postoperative changes including pleural thickening or small effusion . Surgical chain sutures also noted on the left . There is no new consolidation or effusion . The cardiomediastinal silhouette is within normal limits . No acute osseous abnormalities . Surgical clips in the right upper quadrant suggest prior cholecystectomy .
    OUTPUT:
    
Postoperative changes without definite superimposed acute cardiopulmonary process .