Ultrasonography and ultrasound‐guided fine‐needle aspiration biopsy of head and neck lesions: A surgical perspective

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A head and neck ultrasound-guided fine-needle aspiration clinic was set up to determine the role of ultrasound and ultrasound-guided fine-needle aspiration in the evaluation of patients with lesions in this region. One hundred ninety-five lesions were biopsied by ultrasound-guided fine-needle aspiration in 203 patients. Ultrasound detected 2 or more lesions in 14 (48%) of 29 patients with a clinically solitary thyroid nodule. Three (8.8%) of 34 lesions thought to be within the parotid gland were determined to be external. A pronounced learning curve was evident in the technique of ultrasound-guided fine-needle aspiration, particularly for nonpalpable disease. Adequacy of sampling for each 3-month period was 71%, 89%, and 94%, respectively. Seventy-four percent of central aspirations were satisfactory compared to 54% of peripheral aspirations. Ultrasound-guided fine-needle aspiration did not alter the clinical staging of metastatic neck disease in 8 patients having 10 neck dissections but proved useful in detecting nodal recurrence in 3 irradiated necks that did not proceed to surgery. The smallest node to harbor malignancy had 4-mm maximal axial diameter. We conclude that ultrasound and ultrasound-guided fine-needle aspiration are valuable adjuncts to the clinical examination.

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