Under what circumstances should thyroid nodule have fine needle aspiration biopsy

Hello, in the process of ultrasound examination of thyroid nodules, fine needle aspiration biopsy is recommended for nodules that meet the following conditions: ① solid hypoechoic nodules larger than 10 mm in diameter. ② Thyroid nodule of any size suspected of extracapsular growth or cervical lymph node metastasis on ultrasonography. 3.

Children or adolescents with a history of radiation exposure to the neck; First-degree relatives of patients with papillary thyroid carcinoma (PTC), medullary thyroid carcinoma (MTC), or multiple endocrine adenomatosis type 2 (MEN2); Patients with thyroid cancer surgery history; Patients whose calcitonin levels were elevated in the absence of any interfering factors. (4)

Although less than 10 mm in diameter, ultrasonography revealed nodules with signs associated with malignant lesions (hypoechoic and/or irregular border, elongated shape, microcalcification, or disturbance of blood flow signal in the nodules).

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