Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were provided . The lungs are clear and well expanded . No focal consolidation , effusion , or pneumothorax is seen . The heart and mediastinal contours appear stable and within normal limits . There is mild aortic knob calcification . Bony structures are intact .
    OUTPUT:
    
No acute findings in the chest .