Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . No focal consolidation , pleural effusion , or pneumothorax seen . Cardiac and mediastinal silhouettes are stable . Peritracheal soft tissue is also stable since at least ___ , which may be due to prominent vasculature or less likely enlarged thyroid given that there is no mass effect on the trachea .
    OUTPUT:
    
No significant interval change .