Quick Answer: What is poorly differentiated thyroid carcinoma?


What is a poorly differentiated thyroid carcinoma?

Poorly differentiated thyroid carcinomas (PDTCs) are a rare subtype of thyroid carcinomas that are biologically situated between well-differentiated papillary/follicular thyroid carcinomas and anaplastic thyroid carcinomas (ATCs).

Where does poorly differentiated thyroid cancer spread?

Poorly differentiated thyroid cancer is more clinically aggressive and can be challenging to treat. These cancers can spread (metastasizes) to the neck lymph nodes, lungs, and bones.

What is the recommended treatment for well-differentiated thyroid carcinoma?

More than 90% of localized, well-differentiated carcinomas of the thyroid can now be cured by surgery combined with radioactive iodine therapy (9).

Is medullary thyroid cancer poorly differentiated?

Medullary thyroid carcinomas can be distinguished from poorly differentiated thyroid carcinomas based on positive reactions for calcitonin and chromogranin.

Is poorly differentiated carcinoma curable?

It is now clear that some patients with poorly differentiated carcinoma of unknown primary site have extremely responsive neoplasms, and some are curable with combination chemotherapy.

What does poorly differentiated mean?

Pathologists use the term poorly differentiated to describe tumours made up of cancer cells that look very abnormal compared to normal cells, non-cancerous cells. Cancer cells can be described as poorly differentiated based on their shape, size, or colour.

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What is PDTC thyroid cancer?

Poorly differentiated thyroid carcinoma (PDTC) is a rare type of thyroid cancer accounting for < 6% of all thyroid malignancies [1]. Nevertheless, it is the second cause of death from follicular cell-derived thyroid cancer after anaplastic carcinoma [2]. Death is usually secondary to metastatic disease [3].

What is follicular thyroid carcinoma?

Follicular thyroid cancer is a tumor of the follicular cells that are lined by cuboidal epithelial cells and have capsular and vascular invasive properties. Compared to follicular carcinoma, follicular adenoma is benign and occurs more commonly with a ratio estimated to be 5 to 1.

What does medullary thyroid cancer mean?

Medullary thyroid cancer, or MTC, is a cancer that forms in the thyroid. The thyroid is a gland located in the front of your neck, just below the Adam’s apple. It is responsible for sending out hormones to the rest of your body. The inside of the thyroid is called the medulla.

Does thyroid removal shorten life expectancy?

Overall 14% of the patients had reduced life expectancy. There was no reduction in life expectancy for those younger than age 45, but it was reduced in those older than age 45, especially in those over age 60.

Does iodine radiation weaken your immune system?

Treatment of Graves’ disease patients with radioactive iodide (RAI) can induce two therapeutically important alterations in immune response to thyroid antigens. These may be characterized as a first response and a second phase response.

What happens to your body after your thyroid is removed?

If your entire thyroid is removed, your body can’t make thyroid hormone. Without replacement, you’ll develop signs and symptoms of underactive thyroid (hypothyroidism). Therefore, you’ll need to take a pill every day that contains the synthetic thyroid hormone levothyroxine (Synthroid, Unithroid, others).

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Does poorly differentiated thyroid cancer produce thyroglobulin?

Poorly Differentiated Thyroid Cancers

The ability to concentrate iodine, express TSH receptor (TSH-R), and produce thyroglobulin is what distinguishes well-differentiated thyroid cancers from poorly differentiated or undifferentiated thyroid cancers.