Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest were provided . The lungs appear clear . The cardiomediastinal silhouette is normal in stable . There is atherosclerotic calcification at the aortic knob . There is no pleural effusion or pneumothorax . The imaged osseous structures are intact . No free air is seen below the right hemidiaphragm . A dextroscoliosis is partially imaged involving the lumbar spine . No acute bony abnormalities are seen .
    OUTPUT:
    
No acute intrathoracic process .