Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours appear within normal limits and unchanged . Streaky opacities at the left lung base indicate mild atelectasis . A small calcification projecting over the right upper lobe and the course of the right anterior fourth rib as well as the posterior right seventh rib suggests a bone island or parenchymal granuloma but unchanged . Mild pleural thickening appears unchanged at each lung apex . There is no pleural effusion or pneumothorax . The chest appears hyperinflated .
    OUTPUT:
    
No evidence of acute cardiopulmonary disease .