Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Post - surgical changes involving the right apex is unchanged with surgical anterior thoracotomy , and areas of pleural thickening . There is no new focal opacity concerning for pneumonia . There are no pleural effusions or pneumothorax . The cardiomediastinal and hilar contours are stable . Heart size is normal . Note is made of previous atrial septal closure device . Incidentally noted is high - density demonstrated over the right upper quadrant .
    OUTPUT:
    
1 . No acute cardiopulmonary process . 2 . High - density material demonstrated overlying the right upper quadrant of uncertain etiology , may relate to gallstones or ingested material .