Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild enlargement of the cardiac silhouette is re - demonstrated . Superior bilateral anterior mediastinal mass causing relative symmetric narrowing of the trachea is compatible with known thyroid goiter , and appears unchanged . Pulmonary vasculature is not engorged . Hilar contours are maintained . Apart from minimal bibasilar atelectasis , lungs are clear without focal consolidation . No pleural effusion or pneumothorax is demonstrated . No acute osseous abnormalities are detected .
    OUTPUT:
    
No acute cardiopulmonary abnormality . Anterior superior mediastinal mass compatible with thyroid goiter .