MKI67 and neoplasm: The mean Ki-67 index in lymph node metastases with Tg expression of 0–25% (6.6%) was higher compared to the other Tg expression categories, 26–50% (4.7%), 52–75% (3.9%), and 67–100% (3%), but only statistically significant in relation to metastases expressing Tg in 76–100% of tumor cells (p = 0.045) (Fig. 2f).