Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Widening of the superior mediastinum due to known thyroid goiter is re - demonstrated with narrowing of the trachea , better visualized on the recent CT . Heart size remains mildly enlarged , and the mediastinal contours are similar with diffuse atherosclerotic calcifications of the thoracic aorta . Mild pulmonary vascular congestion is re - demonstrated with a small left pleural effusion . Assessment for a right pleural effusion is somewhat limited as the posterior right costophrenic angle is not completely included on the lateral view . No focal consolidation or pneumothorax is identified . There are multilevel degenerative changes demonstrated in the thoracic spine .
    OUTPUT:
    
Widening of the superior mediastinum due to thyroid goiter with tracheal narrowing , better assessed on the recent CT exam . Mild pulmonary vascular congestion and small left pleural effusion .