Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear . No evidence of pneumonia . There is no pleural effusion . No pneumothorax . Cardiac , mediastinal , and hilar contours are normal and stable . Post - surgical changes of median sternotomy with CABG are again seen . Calcifications in the aortic arch are stable . Stable appearance of wedge deformity of T12 .
    OUTPUT:
    
No acute cardiopulmonary process .