Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Median sternotomy wires and clips are in place from prior CABG . Cardiac silhouette is top normal with mild tortuosity of thoracic aorta . Minimal tracheal deviation pattern is slightly increased since ___ and is suggestive of an enlarged left thyroid lobe . Hilar contours are unremarkable . Lungs are clear . Pleural surfaces are clear without effusion or pneumothorax .
    OUTPUT:
    
No acute cardiopulmonary abnormality . Tracheal deviation pattern suggestive of left thyroid lobe enlargement .