Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . Mediastinal and hilar contours are normal . Lungs are clear and the pulmonary vasculature is normal . Previously noted left lower lobe pulmonary nodule seen on CT is not clearly assessed on the current radiograph . No pleural effusion , focal consolidation , or pneumothorax is present . Diffuse degenerative changes are seen throughout the thoracic spine with anterior bridging osteophytes compatible with DISH .
    OUTPUT:
    
No acute cardiopulmonary abnormality . Left lower lobe pulmonary nodule seen on previous chest CT is not well assessed on the current radiograph .