- What Are
- Causes/Risk Factors
- Thyroid Treatments
- Thymus Treatment
- Cures/Life Expectancy
What Are the Thyroid and Thymus?
- Other than having similar-sounding names, there is absolutely no connection or similarity between the function of the thyroid and the thymus glands.
- The thyroid is an endocrine gland that makes thyroid hormone.
- The thyroid is a butterfly-shaped gland located in the lower front of the neck.
- A normal, healthy thyroid gland may not be palpable, but an enlarged thyroid can be felt in the neck.
- Thyroid hormone helps control the body’s metabolism, which are the chemical processes in the body that
- help the body,
- use energy,
- regulate body temperature,
- maintain body weight, and
- keep the brain, heart, lungs, muscles, and other organs working properly.
It is possible to live without a thyroid gland, but it is necessary to take thyroid hormone replacement medications. You cannot live without thyroid hormones.
- The thymus is a small organ located just behind the breastbone, in the space in the chest between the lungs, in front of and above the heart.
- The thymus is part of the body’s immune system, but it is only active until puberty.
- After puberty the thymus decreases in size and is replaced by body fat.
- The thymus organ is critical for immune function until puberty, after which it decreases in size and is replaced by fat.
- Adults essentially live without a functioning thymus organ.
- Problems with the thymus gland can lead to cancer.
What Signs and Symptoms of Thyroid vs. Thymus Problems Are Different and Similar?
Symptoms and Signs of Hyperthyroidism
Symptoms of overactive thyroid (hyperthyroidism) include:
- Weight loss without trying
- Increased heart rate or palpitations
- Increased blood pressure
- Increased sweating
- More frequent bowel movements (sometimes diarrhea)
- Muscle weakness
- Swollen thyroid (goiter)
- Lighter or shorter menstrual periods
Symptoms and Signs of Hypothyroidism
Symptoms of underactive thyroid (hypothyroidism) include:
- Slow heart rate
- Increased sensitivity to cold
- Numbness or tingling in the hands
- Swollen thyroid (goiter)
- Changes in menstrual periods
- Dry skin
- Hair loss
- Weight gain
Symptoms and Signs of Thymus Problems
Symptoms of thymus problems depend on the cause and may include:
What Are the Causes and Risk Factors for Thyroid vs. Thymus Problems?
Causes of Hyperthyroidism
Causes of hyperthyroidism include:
- Graves' disease, which causes overproduction of thyroid hormone
- Toxic nodular or multinodular goiter characterized by nodules or lumps in the thyroid that grow and cause thyroid hormone output to increase.
- Thyroiditis is caused by a problem with the immune system or a viral infection that causes the gland to leak stored thyroid hormone; and taking too much thyroid hormone in tablet form.
Causes and Risk Factors for Hypothyroidism
Causes and risk factors of hypothyroidism include:
- Autoimmune disease (Hashimoto’s thyroiditis).
- Surgical removal of part or all the thyroid gland, radiation treatment.
- Congenital (from birth) hypothyroidism.
- Certain medications.
- Too much or too little iodine
- Damage to the pituitary gland.
- Rare disorders that infiltrate the thyroid
Thyroid Problems and Diseases Risk Factors
Risk factors for thyroid diseases include:
- Past thyroid problems
- Surgery or radiotherapy affecting the thyroid gland
- Type 1 diabetes.
Causes and Risk Factors for Thumus Problems
Causes and risk factors for thymus problems and diseases include:
- Genetic abnormalities. Autoimmune disorders. Cancer.
- Age (seen more commonly in adults in their 70s) and ethnicity (more common in Asians and Pacific Islanders).
What Procedures and Tests Diagnose Thyroid vs. Thymus Problems?
Thyroid Diseases and Problems Diagnosis
Thyroid diseases are diagnosed starting with a health history and physical, which may include checking the neck for thyroid nodules.
A doctor may also order tests such as:
- Blood tests for thyroid-stimulating hormone (TSH).
- Radioactive iodine uptake test.
- Thyroid scan.
- Thyroid ultrasound.
- Thyroid fine needle biopsy.
Thymus Cancer Diagnosis
- In many people with thymus cancer, there are no symptoms, and tumors are found by chance on imaging tests such as chest X-rays or CT scans done for other reasons.
- Other tests that may be performed to diagnose thymus problems include:
What Is the Treatment for Thyroid Problems?
Treatment for thyroid conditions depends on the disease.
Hyperthyroidism is treated and managed with:
- Antithyroid medications.
- Beta-blocker drugs.
- Radioiodine treatment.
In severe cases, surgical removal of the thyroid gland (which may result in permanent hypothyroidism).
- Hypothyroidism is treated with thyroid hormone replacement medication.
- Goiter is treated with medications.
- Thyroid Nodules Treatment
Thyroid Nodules Treatment
Thyroid nodules may require no treatment. When treatment is needed, surgery may be used to remove nodules, or radioiodine may be used to shrink nodules.
Thyroid Cancer Treatment
Thyroid cancer treatment usually involves surgical removal of part or all of the thyroid gland and radioiodine therapy after surgery.
What Is the Treatment for Thymus Cancer?
Surgery to treat thymus cancer, and if necessary, removal of the thymus organ.
- It may be necessary to have radiation therapy before thymus cancer surgery.
- Thymus cancer surgery followed by radiation therapy with or without chemotherapy.
- If thymus cancer cannot be completely removed by surgery treatment options like:
- Chemotherapy treatment
- Chemotherapy treatment with radiation therapy.
- Chemotherapy treatments surgery include:
- Chemotherapy or no chemotherapy.
- Removing the tumor and then radiation therapy.
What Are the Cures and Life-Expectancy for Thyroid Problems vs. Thymus Cancer?
Thyroid Cancer Cure and Life Expectancy
- Most types of thyroid cancer have a very high cure rate.
- Papillary thyroid cancer.
- Follicular thyroid cancer.
- Medullary thyroid cancer has nearly a 100% 5-year survival rate. That means almost all patients will be alive 5 years following diagnosis if the cancer is localized.
- If the thyroid cancer spreads to nearby areas, the 5-year survival rate for these types of thyroid cancers ranges from 90 to 99%.
- Anaplastic thyroid cancer is harder to cure. The 5-year survival rate for localized anaplastic thyroid cancer is just 31%.
Thymus Cancer Cure and Life Expectancy
Thymus cancer is treated with:
- Radiation therapy.
Thymus cancer that is localized has a 92% 5-year survival rate. If the thymus cancer spreads to nearby areas, the 5-year survival rate is 77%.
Survival Rates for Thymus Cancer. American Cancer Society. Updated: Oct 04, 2017.
What Are the Risk Factors for Thymus Cancer? 4 October 2017. 27 March 2020.
<https://www.cancer.org/cancer/thymus-cancer/causes-risks-prevention/risk-factors.html>. What Is Thymus Cancer? Updated: Oct 04, 2017.
Hyperthyroidism (Overactive). American Thyroid Association. 2020.
Hypothyroidism (Underactive). Thyroid.org
What you need to know about the THYROID! 2020. 26 March 2020.
Diseases of the thymus gland. Jointsmedicine.com. Updated: Jul 11, 2017.
Thyroid disease. Office on Women's Health. Updated Apr 01, 2019. 2