Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal contour is within normal limits . There is mild calcification of the aortic knob . Lungs are well expanded and clear . There is no focal consolidation , pleural effusion or pneumothorax . As before , there are calcifications in the region of the hila and AP window , compatible with calcified lymph nodes .
    OUTPUT:
    
No acute cardiopulmonary process .