Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded and clear . There is no focal consolidation , effusion , or pneumothorax . Thickening of the left major fissure is unchanged . Median sternotomy wires are intact . Mediastinal vascular clips are in expected positions . Interval changes to the right AC joint are unchanged .
    OUTPUT:
    
No acute cardiopulmonary process .