Ultrasound-guided fine ... after undergoing FNA generally reported mild pain from the procedure—a median of 3 out of 10, which is similar to the pain reported by children having routine needle ...

Fine-needle aspiration biopsy of the thyroid nodule is a procedure in which a small sample of cells is obtained from a thyroid nodule with the aid of a thin needle under ultrasound guidance.

They also recommend thyroid ultrasonography and fine-needle aspiration for differentiating malignancy and subacute thyroiditis, if necessary. In the second section of the algorithm (“secondary ...