Can thyroid cancer cause an itchy throat and cough?

Written by Yan Chun
Oncology
Updated on May 12, 2025
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Patients with thyroid cancer may experience symptoms such as throat itching and coughing. The causes can be considered from the following aspects: Firstly, thyroid cancer tends to metastasize to the lungs through the bloodstream. Once lung metastasis occurs, respiratory symptoms will appear, including throat itching and coughing. Additionally, these symptoms may also arise from a decrease in immunity following chemotherapy, radiotherapy, and surgical treatments for thyroid cancer, leading to concurrent lung infections. Thirdly, some patients with thyroid cancer may have invasion of nearby organs, such as the esophagus or airways, which can also lead to symptoms of throat itching and coughing. In terms of treatment, apart from symptomatic drug therapy, it is paramount to administer systemic anti-tumor treatments. Effective control of thyroid cancer is essential to alleviate these clinical symptoms.

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Written by Gan Jun
Endocrinology
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Does hypothyroidism lead to thyroid cancer?

Hypothyroidism and thyroid cancer are two different types of thyroid diseases; hypothyroidism does not cause thyroid cancer, and there is no necessary connection between the two. Hypothyroidism refers to a decrease in thyroid function levels, caused by abnormalities in the secretion and synthesis functions of the thyroid, closely related to disorders of the endocrine system. In contrast, thyroid cancer is a change in tissue nature due to malignant transformation in thyroid tissue cells, it is not related to the thyroid's endocrine functions, and currently, there is no research indicating that hypothyroidism increases the likelihood of developing thyroid cancer. Patients with thyroid diseases should undergo dynamic thyroid ultrasonography and monitoring of thyroid function to further clarify their condition.

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Written by Yan Chun
Oncology
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Will thyroid cancer spread if surgery is not performed immediately after a biopsy?

Thyroid cancer, after undergoing a fine needle biopsy, may spread if surgery cannot be performed immediately, which is a risk of the thyroid cancer biopsy. Fine needle biopsy of the thyroid is a method for obtaining histopathological results and is a gold standard for the clinical diagnosis of thyroid cancer. A biopsy is an invasive examination that causes some degree of harm to the body, hence, informed consent must be obtained from the patient before proceeding. After the biopsy, complications such as local bleeding, swelling, pain, and infection may occur, and the spread of cancer cells at the biopsy site is a significant adverse effect. Therefore, for most thyroid cancer patients, it is advisable to arrange surgery as soon as possible after a biopsy to prevent the disease from spreading.

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Written by Gong Chun
Oncology
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Thyroid cancer ultrasound manifestations

The characteristics of ultrasonography for thyroid cancer include the tumor being a solid hypoechoic mass with unclear boundaries, uneven internal echoes, abundant internal blood flow, and the presence of sandy calcifications and longitudinal growth, among others. Currently, ultrasonography is the preferred method for examining thyroid nodules. It can clearly identify the number, nature, and location of thyroid nodules, as well as whether there are any abnormally enlarged lymph nodes in the neck. Ultrasonography is highly accurate in differentiating the nature of thyroid nodules, with experienced ultrasonographers reaching an accuracy rate of over 80%. However, the highest accuracy in differentiating the nature of thyroid nodules is still achieved with fine-needle aspiration cytology.

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Written by Gong Chun
Oncology
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How is thyroid cancer diagnosed?

The first point is the diagnostic process for differentiated thyroid cancer. Initially, most patients may not have symptoms, while a minority might show symptoms due to invasion of surrounding organs. Ultrasound examination is the preferred method for diagnosing thyroid nodules. Ultrasound can clarify the number, nature, and location of thyroid nodules, as well as provide information on whether there are abnormally enlarged lymph nodes in the neck. It has a relatively high accuracy in identifying the nature of thyroid nodules. Currently, the most accurate test for determining the nature of thyroid nodules remains the fine needle aspiration cytology, which has a diagnostic sensitivity of 83-92% and specificity of 80-92%, but it is not 100% conclusive. The second point is about the diagnosis of medullary thyroid cancer. Besides the tests common for thyroid cancers, additional tests for medullary thyroid cancer can include fine needle aspiration, ultrasound, and some serological tests, such as calcitonin and carcinoembryonic antigen tests.

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Late-stage symptoms of thyroid cancer

Differentiated thyroid cancer, in its advanced stages, can exhibit noticeable symptoms due to large nodules or invasion of surrounding organs. For example, a massive nodule pressing on the trachea can cause breathing difficulties, including respiratory distress. Compression of the esophagus can lead to swallowing difficulties, and pressure on the recurrent laryngeal nerve may result in symptoms like hoarseness. Even very few benign thyroid nodules can cause edema and inflammation by compressing these nerves. Therefore, differentiation and distinctive treatment are essential, along with a pathological diagnosis. Medullary thyroid cancer also presents specific symptoms, including persistent diarrhea, endocrine syndromes, and other accompanying conditions such as pheochromocytoma, multiple mucosal neuromas, and symptoms and signs caused by parathyroid adenomas.