Under what circumstances should fine needle aspiration needle biopsy be performed for thyroid nodules

But at the same time, biopsy is also a kind of damage to the body, and damage may also occur. So under what circumstances should fine needle biopsy be performed? Let me introduce it below: The clinical treatment of thyroid nodules should be based on the results of ultrasound and FNA biopsy. The new guidelines point out that when patients are at risk of thyroid malignancy, palpable nodules, multinodular goiter or lymphadenopathy with suspected malignant lesions, thyroid ultrasound should be performed. According to the results of the examination, determine whether a fine needle aspiration biopsy under ultrasound guidance is necessary. During the ultrasound examination, FNA biopsy is recommended for nodules that meet the following conditions: ① Solid hypoechoic nodules with a diameter greater than 10 mm. ② Ultrasound examination of thyroid nodules of any size suspected of extracapsular growth or cervical lymph node metastasis. ③ Children or adolescent patients with a history of cervical radiation exposure; first-degree relatives of patients with papillary thyroid carcinoma (PTC), medullary thyroid carcinoma (MTC), or multiple endocrine neoplasia type 2 (MEN2); have surgery for thyroid cancer History; those whose calcitonin level is elevated without any interfering factors. ④ Although the diameter is less than 10 mm, ultrasonography revealed nodules with signs related to malignant lesions [hypoechoic and/or irregular borders, elongated shapes, microcalcifications, or disturbance of blood flow signals in the nodules]. For multinodular goiter: ① When the nodules meet the above-mentioned malignant signs on ultrasound examination, there are rarely more than 2 nodules that require FNA biopsy; ② When the isotope scan shows "hot" nodules, FNA cannot be performed Biopsy; ③ If there is suspicious lymphadenopathy, FNA biopsy should be performed on enlarged lymph nodes and suspicious nodules at the same time. For mixed (cystic-solid) thyroid nodules: ① UGFNA biopsy is performed on the solid part; ② Cytological examination is performed on the FNA biopsy sample and the liquid sample drawn at the same time. For thyroid accidental tumors: ① The treatment should be based on the diagnostic criteria of thyroid nodules; ② For accidental tumors found by CT or magnetic resonance imaging (MRI), ultrasound examination should be performed before UGFNA; ③ For 18F-fluorodeoxygenation Unexpected tumors found in glucose-positron emission tomography (PET) scans have a higher risk of malignancy, so ultrasound and UGFNA should be performed at the same time. The above not only introduced the need for biopsy, but also let us know some of the requirements for biopsy of thyroid nodules. Only in this way can we achieve the purpose of biopsy and achieve the accuracy of disease diagnosis.

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