Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette is normal in size . Enlargement of the right paratracheal stripe is due to a known thyroid goiter , better assessed on the CT of the cervical spine . Mediastinal and hilar contours are otherwise unremarkable . Pulmonary vasculature is normal . Lungs are clear . No pleural effusion or pneumothorax is present . Mild moderate degenerative changes are noted within the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality .