<unk>  is cancer that develops from the tissues of the<unk>  gland. It is a disease in which cells grow abnormally and have the potential to spread to other parts of the body. Symptoms can include swelling or a lump in the neck. Cancer can also occur in the<unk>  after spread from other locations, in which case it is not classified as<unk> . Risk factors include radiation exposure at a young age, having an enlarged<unk> , and family history. The four main types are papillary<unk> , follicular<unk> , medullary<unk> , and anaplastic<unk> . Diagnosis is often based on ultrasound and fine needle aspiration. Screening people without symptoms and at normal risk for the disease is not recommended as of 2017. Treatment options may include surgery, radiation therapy including radioactive iodine, chemotherapy,<unk>  hormone, targeted therapy, and watchful waiting. Surgery may involve removing part or all of the<unk> . Five-year survival rates are 98% in the United States. Globally as of 2015, 3.2 million people have<unk> . In 2012, 298,000 new cases occurred. It most commonly is diagnosed between the ages of 35 and 65. Women are affected more often than men. Those of Asian descent are more commonly affected. Rates have increased in the last few decades, which is believed to be due to better detection. In 2015, it resulted in 31,900 deaths.
Thyroid cancer
Metastasis
Papillary thyroid cancer
Thyroid nodule
Thyroid lymphoma
Medullary thyroid cancer
Thyroid neoplasm
Follicular thyroid cancer