Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiograph demonstrate well expanded and clear lungs without focal consolidation . There is no pleural effusion or pulmonary edema . The heart size is normal and hilar contour or unremarkable . No displaced rib fracture or rib lesion is identified . There are degenerative changes in the lower thoracic spine .
    OUTPUT:
    
No acute intrathoracic process .