Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are no new areas of consolidation in the lungs to suggest the presence of pneumonia . Again demonstrated is a large left superior mediastinal mass with associated marked rightward tracheal displacement and tracheal narrowing , with coronal dimension of the trachea of approximately 5 mm above the thoracic inlet level . As compared to the prior radiograph , the extent of displacement and severity of narrowing has slightly worsened . Cardiac silhouette remains markedly enlarged , though pulmonary vascularity is normal . Aorta is tortuous and calcified . Focal linear scar in left mid lung is unchanged . No pleural effusion or acute skeletal finding . Calcifications in the left supraclavicular region are again demonstrated .
    OUTPUT:
    
1 . No evidence of pneumonia . 2 . Large thyroid mass displacing and narrowing the trachea as described .