Thyroid cancer ultrasound manifestations

Written by Gong Chun

Oncology

Updated on September 02, 2024

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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 Yan Chun

Oncology

56sec

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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

1min 15sec

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Causes of Thyroid Cancer

Regarding the causes of thyroid cancer, they are similar to most malignant tumors. The etiology of thyroid cancer is currently unclear, but some factors have been found to be associated with the onset of thyroid cancer. The first factor is neck radiation; the thyroid is an endocrine organ that is sensitive to radiation, so radiation exposure may cause carcinogenic changes in thyroid cancer cells. The second factor is genetics; some thyroid cancers have a clear genetic predisposition, the most typical being medullary thyroid cancer, with about 25% of patients showing familial clustering, known as familial medullary thyroid cancer. The third factor is that the rapid increase in the incidence of thyroid cancer also has some reasons, with one recognized reason being advancements in early diagnostic methods, allowing for the easy detection of numerous early lesions. The fourth is iodine intake, which has been shown to be related to some benign diseases of the thyroid, but its relationship with thyroid cancer itself needs further study.

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Written by Zhao Xin Lan

Endocrinology

1min 12sec

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Differences between the symptoms of thyroiditis and thyroid cancer

Thyroiditis, if it is acute suppurative thyroiditis, clinical manifestations include fever, local pain in the thyroid, tenderness on palpation, and a hard texture of the thyroid. Examination will show an increase in white blood cells. Subacute thyroiditis may also present with mild fever or high fever and local pain in the thyroid, but compared to suppurative thyroiditis, the increase in white blood cell levels is not as significant in subacute thyroiditis. If it is autoimmune thyroiditis, there may not be obvious symptoms clinically; there may be enlargement of the thyroid, and the thyroid may feel tougher upon palpation. As for thyroid cancer, clinically, if it does not cause hyperthyroidism or hypothyroidism, there are no specific symptoms. When the cancerous tumor is large, there may be an enlargement of the thyroid, the texture of the enlarged thyroid will be very hard, and there will be notable local adhesions. Of course, the main difference can be detected and diagnosed through an ultrasound examination.

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Written by Xu Dong Dong

Endocrinology

52sec

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Can people with normal thyroid function get thyroid cancer?

Thyroid function and thyroid cancer are not necessarily related. It is possible to have thyroid cancer even when thyroid function is normal. Clinically, thyroid cancer is usually detected by color ultrasound. Clinicians will classify thyroid nodules based on their size, texture, growth direction, presence of blood flow signals, clarity of boundaries, infiltration of surrounding tissues, and enlargement of nearby lymph nodes. Nodules classified as categories one to three generally have a benign tendency, and regular follow-up appointments are sufficient. If the nodules are classified as categories four to five, they are suggestive of malignancy, and it is recommended to perform thyroid fine needle aspiration or surgery to determine the pathological type of the nodules.

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Written by Gan Jun

Endocrinology

42sec

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Is a hypoechoic area definitely thyroid cancer?

A thyroid nodule underwent an ultrasound B-examination and showed hypoechoic features, but this does not necessarily indicate thyroid cancer. It is essential to conduct relevant tests to determine the cause. For such thyroid nodules, it is first important to check their specific size. If there is concern about the presence of a malignant tumor, it is advisable to perform a fine needle aspiration for pathological examination to confirm the diagnosis. If the thyroid nodule exceeds one centimeter and causes local pain or affects surrounding blood vessels, leading to symptoms of compression, it is recommended that patients should promptly undergo surgical removal for treatment.