Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is mildly enlarged . Mild atherosclerotic calcifications are noted at the aortic knob . Mediastinal and hilar contours are unchanged . Pulmonary vasculature is normal . Lungs are hyperinflated but clear . No focal consolidation , pleural effusion or pneumothorax is present . No acute osseous abnormality is visualized . Deformity of the distal right clavicle likely reflects prior healed fracture .
    OUTPUT:
    
No acute cardiopulmonary abnormality .