Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable upright chest radiograph was obtained . The lungs are well inflated and clear . No focal consolidation , effusion , or pneumothorax is present . The cardiac and mediastinal contours are normal . Left - sided subclavian line projects over the left brachiocephalic / SVC junction .
    OUTPUT:
    
No acute cardiopulmonary process .