Fine-needle aspiration biopsy is the most common method for preoperative diagnosis of thyroid carcinomas including papillary carcinoma. The procedure is best performed with ultrasound by operator with professional skill and knowledge. Several guidelines recommend the indication of fine-needle aspiration concerning the pattern of ultrasound and size of nodules. Besides, fine-needle aspiration biopsy of lymph nodes should be performed if malignancies are suspected. Fine-needle aspiration biopsy of thyroid gland is mostly safe, but complications such as blood extravasation-related complications, acute thyroid enlargement, infection in thyroid gland, and pneumothorax could occur. The most frequent complications are blood extravasation-related complications, which could be fatal. Similarly, acute thyroid enlargement could also be severe. To conclude, fine-needle aspiration biopsy is useful and should be performed under the precise indication and the updated knowledge of complications including the way of handling if they occur.
Keywords: Acute thyroid enlargement; Blood extravasation-related complications; Fine-needle aspiration biopsy; Metastatic lymph nodes; Thyroid nodules.
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