Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is top normal . Re - demonstrated is a superior anterior mediastinal mass with deviation of the trachea to the right , similar compared to the prior exam , likely related to a large thyroid goiter . Mediastinal and hilar contours are otherwise unchanged . Lungs are clear . No focal consolidation , pleural effusion or pneumothorax is demonstrated . No acute osseous abnormalities seen .
    OUTPUT:
    
No evidence of pneumonia . Unchanged superior anterior mediastinal mass with rightward tracheal deviation likely reflective of a large thyroid goiter .