Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A single portable chest radiograph demonstrates hyperinflation of the lungs with slight flattening of the diaphragm . The lungs are clear without focal consolidation concerning for pneumonia , pleural effusion or pneumothorax . The pulmonary vasculature is not engorged . The cardiac silhouette is normal in size . The mediastinal and hilar contours are within normal limits and unchanged from the preceding study . Multilevel degenerative changes are noted in the thoracic spine with bridging marginal osteophyte formation and loss of intervertebral disc height .
    OUTPUT:
    
No acute cardiopulmonary process .