Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiographs were obtained . The lungs are well inflated and clear . No focal consolidation , effusion , or pneumothorax is present . An mild left convex contour in the AP window is unchanged since ___ and likely represents a vascular contour rather than adenopathy .
    OUTPUT:
    
No acute cardiopulmonary process . Stable mild convex contour in the AP window . This is almost certainly a normal vascular contour . Repeat shallow oblique chest radiographs are suggested for confirmation .