Stage II includes: (T2, N0, M0); (T3, N0, M0). T2: Tumor measuring more than 2 cm but less than 4 cm in greatest dimension limited to the thyroid. T3: Tumor measuring 4 cm or more in greatest dimension or with extrathyroidal extension. N0: No evidence of locoregional lymph node metastasis. M0: No distant metastasis. (from AJCC 8th Ed.) [from NCI]