Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest demonstrate the lungs are well expanded and clear . The cardiomediastinal silhouette is unremarkable . There is no pleural effusion , pulmonary edema , pneumothorax , or focal opacification within the lungs . The aorta is somewhat tortuous and aortic knob calcifications are noted . No displaced fractures are identified .
    OUTPUT:
    
No acute cardiopulmonary process . No evidence of fracture .