Rosalyn Carson-DeWitt, MD
The information provided here is meant to give you a general idea about each of the medications listed below. Only the most general side effects are included, so ask your doctor if you need to take any special precautions. Use each of these medications as recommended by your doctor, or according to the instructions provided. If you have further questions about usage or side effects, contact your doctor.
Hormones are chemical messengers that regulate specific body functions. They are produced by various glands in the body and enter the blood stream, where they travel to other tissues and exert their influence. Hormonal therapy is used in cancer treatment to augment or interfere with the activity of certain hormones that can influence the growth of tumors.
Hormonal therapy is an important adjunct for thyroid cancer. It is delivered in the form of thyroid hormone pills. Hormonal therapy is used both to treat the deficiency of thyroid hormone that occurs after the thyroid gland is removed or destroyed and to prevent or delay remaining bits of thyroid tissue from growing by suppressing thyroid-stimulating hormone (TSH) secreted from the pituitary gland.
There are several types of thyroid hormones which could be used:
Giving thyroid hormone seems to decrease the chance that remaining bits of thyroid tissue will grow. No one is sure how long patients should continue to be treated with thyroid hormone, however.
Since the elderly may have an underlying heart, liver, or kidney disease, these hormone medications should be used with caution in this population.
You’ll need to be monitored regularly and carefully to make sure that you are receiving an appropriate dose of thyroid hormone. Too little hormone will cause
hypothyroidism, which has the following symptoms:
Too much hormone can cause
hyperthyroidism, which has the following symptoms:
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http://www.cancer.org/docroot/CRI/CRI_2_3x.asp?dt=43. Accessed December 10, 2002.
What you need to know about cancer of the thyroid. National Cancer Institute website. Available at
http://cancer.gov. Accessed December 10, 2002.
Last reviewed September 2016 by Mohei Abouzied, MD, FACP
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