Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post thoracic aortic graft repair . The mediastinal contours are unchanged . Moderate cardiomegaly persists . There is no pulmonary vascular engorgement , and the hilar contours are normal . Apart from streaky atelectasis at the lung bases , the lungs are clear without focal consolidation . No pleural effusion or pneumothorax is identified . The lungs are hyperinflated with relative paucity of the pulmonary vascular markings towards the apices compatible with mild to moderate centrilobular emphysema . Mild degenerative changes are noted in the thoracic spine . There are no acute osseous abnormalities .
    OUTPUT:
    
No acute cardiopulmonary process .