<unk>  <unk> , also known as<unk>  thyroid carcinoma, is an aggressive form of thyroid<unk>  characterized by uncontrolled growth of cells in the thyroid gland. This form of<unk>  generally carries a very poor prognosis due to its aggressive behavior and resistance to<unk>  treatments. The cells of<unk>  are highly abnormal and usually no longer resemble the original thyroid cells and have poor differentiation.<unk>  is an uncommon form of thyroid<unk>  only accounting for 1-2% of cases, but due to its high mortality, is responsible for 20-50% of deaths from thyroid<unk> . The median survival time after diagnosis is three to six months. Some studies report that 10% to 15% survive more than 1 year; 3-year and 5-year survival is very rare. It occurs more commonly in women than in men and is seen most commonly in people ages 40 to 70.
Anaplastic thyroid cancer
Thyroid lymphoma
Follicular thyroid cancer
Papillary thyroid cancer
Medullary thyroid cancer
Squamous-cell thyroid carcinoma
Poorly differentiated thyroid cancer
Thyroid adenoma