Post-thyroidectomy complications

Written by Luo Han Ying

Endocrinology

Updated on January 31, 2025

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In clinical practice, for large thyroid nodules that cause compressive symptoms, such as difficulty swallowing, breathlessness, and hoarseness, thyroid nodule excision surgery can be performed. However, this surgery can have sequelae. First, if the excised thyroid tissue is too large, it can easily lead to reduced thyroid function, requiring lifelong supplementation with thyroid hormones for treatment. Secondly, due to the sensitive location of the thyroid gland, which is surrounded by various glands and nerves, injury during surgery can lead to complications such as seizures and hoarseness, which are considered post-surgical sequelae.

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Written by Chen Xie

Endocrinology

48sec

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The difference between thyroid enlargement and thyroid nodules

Thyroid enlargement generally refers to simple thyroid enlargement, which is typically diffuse thyroid enlargement, mainly caused by iodine deficiency, commonly seen in endemic goiter and physiological thyroid enlargement. Thyroid nodules, on the other hand, are nodular hyperplasia of the thyroid caused by certain physical and chemical factors. Thyroid nodules can manifest as benign hyperplasia or malignant hyperplasia. Therefore, the risks associated with thyroid nodules are relatively greater than those of thyroid enlargement. However, some patients with thyroid enlargement, as the disease progresses, can develop nodular hyperplasia of the thyroid. These are the differences between the two.

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Written by Hu Jian Zhuo

Nephrology and Endocrinology

1min 14sec

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Do thyroid nodules affect pregnancy?

This decision should be based on the nature of the thyroid nodules. If the thyroid nodule is benign, pregnancy generally will not be affected, and it is possible to conceive. However, if the patient has malignant thyroid nodules, I would advise against rushing into pregnancy. Firstly, prioritize treating the malignant thyroid nodules promptly. If you become pregnant during this time, the risks associated with surgery and medications for both the pregnant mother and the fetus are very high. Nevertheless, after receiving timely and standardized treatment and once the patient's condition has stabilized, it is possible to conceive. However, it should be noted that surgery may lead to reduced thyroid function. In the first 12 weeks of pregnancy, the fetus relies on the mother for thyroid hormone supply. If the mother's thyroid hormone levels are too low, it can lead to delayed fetal development, and even abnormal brain development, resulting in a baby born with intellectual disabilities. Therefore, women with a history of thyroid disease should develop a treatment plan under the joint collaboration of an endocrinologist and an obstetrician-gynecologist.

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Written by Hu Jian Zhuo

Nephrology and Endocrinology

1min 32sec

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Thyroid Nodule Classification Standard

To standardize the diagnosis of thyroid diseases, we have categorized thyroid nodules into six levels, with the severity and the likelihood of malignancy increasing with each level: Grade 1 refers to normal thyroid tissue; Grade 2 indicates benign changes in the thyroid, with the risk of malignancy increasing over time. For example, simple thyroid cysts, which require an ultrasound check every 1-2 years; Grade 3 refers to the presence of nodules in the thyroid with a malignancy possibility of

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Written by Hu Jian Zhuo

Nephrology and Endocrinology

2min 8sec

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Effects after thyroid nodule removal

Thyroid surgery often leads to postoperative bleeding as a common complication. Bleeding may compress the trachea, causing difficulty in breathing. If a patient exhibits severe breathing difficulties along with significant bleeding from the drainage tube post-surgery, emergency hemostasis should be performed. Secondly, tracheomalacia. Long-term compression from the mass softens the tracheal wall, leading to a collapse due to inadequate support from surrounding tissues. Thus, after removing thyroid nodules, the thyroid and adjacent tissues fail to support the softened trachea, resulting in breathing difficulties. Thirdly, pharyngeal edema. During surgery, inflammatory stimulation can cause edema in the surrounding tissues, which may lead to difficulty in breathing. Therefore, after ruling out possibilities of postoperative bleeding, tracheomalacia, or vocal cord paralysis, pharyngeal edema should be considered. Nebulization therapy can be administered. Fourthly, vocal cord paralysis is common due to accidental damage to the recurrent laryngeal nerve during surgery, causing hoarseness. Generally, patients may gradually recover over three to six months, and symptoms can improve. The fifth effect is damage to the parathyroid glands. If the parathyroid glands are damaged, it may lead to abnormal blood calcium levels and symptoms of hypocalcemia, such as tetany and spasms. Most cases are due to vascular damage to the parathyroid glands resulting in temporary hypofunction, which often recovers shortly. The sixth possible outcome is a thyroid storm. Some patients with hyperthyroidism may experience a sudden release of large amounts of thyroid hormone into the bloodstream post-surgery, causing high fever, irregular heart rate, restlessness, nausea, vomiting, coma, and even death. The seventh effect is that removal of the thyroid gland leads to a deficiency in thyroid hormones, resulting in symptoms of hypothyroidism.

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Written by Hu Jian Zhuo

Nephrology and Endocrinology

1min 55sec

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Thyroid nodule examination checks what

Generally, when thyroid nodules are detected, one should visit the hospital's breast and thyroid surgery department or the endocrinology department. If you find a thyroid nodule, you can consult a doctor and undergo some relevant tests based on your specific situation. Typically, the following tests are conducted: 1. Thyroid ultrasound: This can determine the size, number, location, texture, shape, and edges of the nodules, including whether there is calcification. It also examines the blood supply within the thyroid nodule, the relationship with surrounding tissues, and assesses whether there are lymph nodes in the neck and the nature of these lymph nodes. 2. Blood tests are needed to measure thyroid function, particularly the level of Thyroid Stimulating Hormone (TSH). Higher levels of TSH indicate that the thyroid nodule is more likely to be proliferative, and thus, the risk of thyroid cancer increases. In addition, Thyroglobulin (Tg) can be measured. Another measure is Serum Calcitonin (Ct). If serum calcitonin is > 100 pg/mL, medullary thyroid cancer should be highly considered, as these cancer cells can secrete large amounts of serum calcitonin, causing this marker to significantly increase. Nuclear isotope imaging is also performed. If the nodule is large and TSH levels are low, a thyroid radionuclide scan is conducted to see if the nodule is a hyperfunctioning adenoma. When necessary, a Fine Needle Aspiration Biopsy (FNAB) is also performed. Fine needle aspiration is an invasive test, but it is currently an important and most efficient method to assess the benign or malignant nature of the nodule. It is generally performed under ultrasound guidance.