Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: No localizing information is provided with regards to the patient 's pain . Right greater than left upper lung opacification is compatible with known post-radiation related change . Otherwise , the lungs are clear without pleural effusion or pneumothorax . Increase in AP diameter is likely predominantly due to kyphosis , though some contribution of emphysema can not be excluded . No displaced rib fractures are identified . Irregularities to the left lateral seventh and eighth ribs reflect old rib fractures . Heart size is top normal with mild S - shaped scoliosis of the thoracic spine .
    OUTPUT:
    
No new rib fractures or acute intrathoracic process .