Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Minimal atelectasis / scarring is noted in the lingula . Otherwise , lungs are clear with no evidence of consolidation , effusion , or pneumothorax . Cardiomediastinal silhouette remains at the upper limits of normal and stable . Aortic knob calcifications are visualized . Multiple surgical clips are visualized in the left upper abdomen . Visualized osseous structures are unremarkable .
    OUTPUT:
    
No evidence of acute pulmonary process .