There are indications for which conditions require a fine needle thyroid biopsy needle

Solid hypoechoic nodules larger than 10mm in diameter were detected by B-ultrasound. 2. B-ultrasound examination of thyroid nodule of any size with extracapsular growth or cervical lymph node metastasis. 3. Children or adolescents with a history of neck radiation exposure; First-degree relatives of patients with papillary thyroid carcinoma, medullary thyroid carcinoma or multiple endocrine adenomatosis; Have a history of thyroid surgery; Elevated calcitonin levels measured in the presence of any disturbance. 4. Although the diameter of thyroid nodule is less than 10mm, b-ultrasonography found nodule with signs related to malignant lesions (low echo or irregular boundary, elongated shape, tiny calcification or disturbance of blood flow signal within the nodule).

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