Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP upright chest radiograph was provided . Overlying EKG leads are present . The lungs appear clear without focal consolidation , effusion , or pneumothorax . The cardiomediastinal silhouette appears normal . Bony structures are intact . Bilateral mild AC joint arthropathy is incidentally noted .
    OUTPUT:
    
No signs of pneumonia .