Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette size remains mildly enlarged . Mediastinal and hilar contours are unchanged , with similar mild rightward deviation of the trachea . Mild calcification at the aortic knob is again noted . The pulmonary vasculature is not engorged . The lungs are clear without focal consolidation . No pleural effusion or pneumothorax is seen . Multilevel degenerative changes are noted in the thoracic spine with anterior osteophyte formation .
    OUTPUT:
    
No acute cardiopulmonary process . Unchanged mild rightward deviation of the trachea , possibly due to an enlarged thyroid gland and clinical correlation is recommended .