Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral images of the chest . The lungs well expanded . Bilateral upper lobe opacities consistent with chronic fibrosis are again seen , unchanged from prior exam . The lungs are otherwise clear . There is no pleural effusion or pneumothorax . The cardiomediastinal silhouette is unremarkable .
    OUTPUT:
    
No acute cardiopulmonary process . Stable fibrotic changes in the upper lungs .