Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were obtained demonstrating no focal consolidation , effusion , or pneumothorax . The cardiomediastinal silhouette appears normal . Faint atherosclerotic calcifications along the aortic knob are noted . The imaged osseous structures are intact . AC joint arthropathy is noted on the right . No free air below the right hemidiaphragm .
    OUTPUT:
    
No signs of pneumonia or CHF .