Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Lung volumes are somewhat low though lungs appear clear . There is no focal consolidation , effusion , or pneumothorax . The heart appears top - normal in size . Mediastinal contour is unremarkable . Imaged osseous structures are intact . Degenerative changes are noted in the lumbar spine . No free air below the right hemidiaphragm is seen .
    OUTPUT:
    
No acute intrathoracic process .