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There are no special precautions. People who have undergone thyroid cancer surgery may be very careful when moving their neck after the surgical site heals. On the contrary, it is recommended that you do neck exercises or stretches frequently, and if you have an abnormal voice, you can visit an ENT doctor to check whether there is anything wrong with the vocal cords.
However, if you have undergone a hemimectomy, it is recommended that you refrain from eating foods that may cause inflammation of the thyroid gland. For example, foods such as seaweed soup that contains iodine should be eaten about once a month.
Taking thyroid hormone medications depends on how well your thyroid gland function remains after surgery. As a result of a study conducted on thyroid cancer patients at Seoul National University Hospital and Gangnam Severance Hospital, it was reported that about 10-15% of them developed hypothyroidism after surgery. In other words, 1-2 out of 10 people will take hormone medication after surgery. Most of the people in this 10-15% group had poor thyroid function or inflammation of the thyroid gland before surgery.
Of course, there are cases where thyroid hormone medications are taken to prevent thyroid cancer from recurring, even though the thyroid function is normal. However, this treatment is only a criterion for patients with stage 3 or 4 total resection after the stage has progressed, and there is no clear argument yet for those who have undergone hemiresection.
The most common thyroid hormone drug is L-T4, also known as thinziroid and cinziroxine. Because thyroid hormones are adjusted in micrograms (μg), the dosage of drugs on the market varies widely.
Other options include comgiroid, which is a combination of T3 and T4, and tetronine, which is a T3-only formulation. Tetronine, for example, has a short half-life and may be taken before radioactive iodine treatment.
While most medications are usually taken after meals, thyroid hormones should be taken on an empty stomach. This is because it takes at least 30 minutes for the hormone to dissolve in the stomach and be absorbed in the intestines.
Ideally, it should be consumed at least 30 minutes before the next meal after 2 hours after the previous meal. We usually advise our patients to take it with water as soon as they wake up in the morning.
Of course, with a persistent deterioration in thyroid function, supplementing the dose of hormonal drugs is a bad sign.
However, the dosage of thyroid hormones is usually prescribed based on body weight, muscle mass, and individual absorption rates. Even if you have the same thyroid function, if you have a lot of muscle mass, you will be prescribed a higher dose of hormone medication, so you don't have to worry too much about the dose.
It is important that thyroid hormones are absorbed correctly, so it is best to take them alone when considering absorption rates.
First of all, it is recommended to take blood pressure medications, osteoporosis medications, and hyperlipidemia medications at a staggered time after taking thyroid hormone medications. In the case of probiotics, probiotics, probiotics, calcium supplements, dietary fiber, neuropsychiatric drugs, and phenytoin, it is recommended to consult with your doctor, as they can significantly reduce the absorption rate of thyroid hormones.
Thyroid hormone medications are not treatments, but medications that supplement hormones in the body. Therefore, people with hypothyroidism will need to take medication for the rest of their lives if their function does not return.
However, if you are taking hormonal medications to prevent thyroid cancer recurrence, you may want to stop the medication once the suppression treatment period is over.
The thyroid gland of pregnant women enlarges about 1.5~2 times during pregnancy. This is because thyroid hormones are essential for neurodevelopment and brain development during early pregnancy, while reducing the likelihood of miscarriage in the fetus. However, those who have undergone thyroidectomy have difficulty producing the hormones they need. In this case, it is recommended to take hormonal medications to help with supply.
Thyroid hormones are classified as Category A by the US FDA for safety in pregnant women and are rated A by AECD in Australia. This means that no malformations or adverse effects on the fetus have been observed when given to a large number of women of childbearing age and pregnant women, so don't worry, get a prescription for thyroid hormones.
There are two problems you may have after thyroid cancer surgery.
First, there may be a change in the voice. Even if the surgery goes well, about 1 in 100 people will suffer damage to the nerves of the vocal cords.
Second, it can cause damage to the parathyroid glands. Although it is rare in the case of hemiresection, 10~13% of those who have undergone total resection may suffer permanent damage to the parathyroid gland for unavoidable reasons. When hypoparathyroidism occurs, numbness in the hands and feet appears. This symptom is not limited to one hand, but is severe enough to cause cramps from the tips of both hands to the whole body, so it is a good idea to think about a disc or other back condition for general numbness in the hands.
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