Stage II thyroid cancer
The thyroid cancer staging classification system is very similar for older patients with differentiated tumors and for those with medullary thyroid cancer. Age is not a consideration when classifying medullary cancers.
Cancers in stage II meet one of the following criteria:
- The diameter of the primary tumor ranges from 2 to 4 cm. There are no cancer cells in regional lymph nodes or distant sites in the body.
- The primary tumor is larger than four cm in diameter or has started to grow outside of the thyroid gland. No cancer was found in the lymph nodes or other parts of the body (medullary thyroid cancer only).