Foods to avoid with thyroid cysts

Written by Chen Xie
Endocrinology
Updated on September 20, 2024
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For patients with thyroid cysts, it is necessary to first understand the patient's thyroid function, whether it is normal, overactive, or underactive. For patients with thyroid cysts who also have hyperthyroidism, a diet avoiding iodine is still necessary, as excessive iodine intake can significantly affect their hyperthyroid condition, therefore they need to consume iodine-free food. However, for patients with normal thyroid function or those with hypothyroidism, a normal diet is appropriate, and there is no need to avoid iodine. It is also recommended that they avoid smoking and alcohol in their daily life.

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Written by Zhao Xin Lan
Endocrinology
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What should I do if a thyroid cyst causes a fever?

Thyroid cysts are one of the most common benign masses found in the thyroid gland. Generally, they do not become cancerous and usually have no clinical symptoms; therefore, thyroid cysts themselves do not cause fever. If a patient with a thyroid cyst develops a fever, it is important to consider whether there might be a concurrent infectious disease. If there is pain in the area of the thyroid, it is necessary to evaluate for conditions such as thyroiditis or a thyroid abscess. A simple thyroid cyst alone would not cause a fever.

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Written by Luo Juan
Endocrinology
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Can thyroid cysts grow larger?

Some thyroid cysts can grow larger. A thyroid cyst refers to a fluid-filled sac found in the thyroid gland, typically round in shape with a diameter ranging from two to five centimeters. Generally, these cysts are painless or only mildly painful. Most are solitary nodules, though a few are found in multiple nodules. Thyroid cysts are not an independent disease; they can result from simple goiter, nodular goiter, or degenerative changes in thyroid adenomas. Some cysts may also form due to thyroid cancer, through processes like hemorrhaging and necrosis. At least 4% of the population can feel thyroid nodules larger than one centimeter, and about 5% to 20% of these nodules are cystic. Particularly when individual nodules exceed four centimeters in diameter, thyroid cysts have a 4% to 5% rate of malignancy. Therefore, it is possible for thyroid cysts to grow larger.

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Written by Luo Juan
Endocrinology
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Which department should I go to for a thyroid cyst?

Firstly, we recommend that patients with thyroid cysts should consult the endocrinology department first to assess thyroid function, to determine if there is hypothyroidism, hyperthyroidism, or normal thyroid function. Then, perform a thyroid ultrasound to evaluate the size of the cyst and its relationship with surrounding tissues, etc. Therefore, patients with thyroid cysts should first visit the endocrinology department. If surgical intervention or other further treatments are necessary, then a visit to the breast and thyroid department is needed. However, it is first essential to assess the function and local conditions of the cyst in the endocrinology department before deciding on the next step of treatment.

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Written by Zhao Xin Lan
Endocrinology
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Precautions for Thyroid Cysts

If an ultrasound has confirmed a diagnosis of a thyroid cyst, it's important to manage iodine intake in your diet. You should not consume too much iodine, but also not completely avoid it; a normal, regular diet is sufficient. Secondly, it is important to monitor any changes in the size of the thyroid cyst. Regular ultrasound checks and self-examination can help observe if there's any rapid increase in size locally. If the cyst grows significantly and is accompanied by pain, it might indicate the risk of bleeding within the cyst. Normally, do not massage the thyroid cyst, as massaging will not have any beneficial effects.

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Written by Zhao Xin Lan
Endocrinology
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Can thyroid cysts be massaged?

Thyroid cysts refer to fluid-filled sac-like structures that appear in the thyroid, which are usually benign. The fluid contained within is often referred to as a blister. These blisters can be quite large, over five centimeters, or quite small, less than one centimeter. They should not be massaged, as massage does not offer any benefits to them. If the cyst is relatively large, massaging the area can stimulate it, causing bleeding within the cyst. Consequently, the cyst may rapidly and temporarily enlarge, potentially causing localized pain, compression, and even difficulties in breathing and swallowing. Therefore, it is advised not to massage thyroid cysts.