Your thyroid is shaped like a small butterfly, and is usually found inside the lower front of your neck. It’s a gland that controls your metabolism. It also releases hormones that direct many functions in your body, including how you use energy, how you produce heat, and how you consume oxygen.
Thyroid cancer develops when cells change or mutate. The abnormal cells begin multiplying in your thyroid and, once there are enough of them, they form a tumor.
If it’s caught early, thyroid cancer is one of the most treatable forms of cancer.