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Can Fine-Needle Aspiration Biopsy of Thyroid Nodule Help in Determining the Extent of Surgery in Follicular and Hurthle Cell Neoplasm at a Community Teaching Institution?

Fine-needle aspiration biopsy (FNAB) was used to evaluate cold thyroid nodules in 179 patients treated between 1990 and 1998. The purpose of this study was to see whether FNAB findings of follicular or Hurthle cells could help in planning the extent of thyroid surgery. Group I patients (47) had findings suggestive of follicular or Hurthle cell neoplasm. Group II patients (132) had inconclusive results. In group I FNAB was 100 per cent correct in diagnosing follicular or Hurthle cell neoplasm with a high percentage of malignant findings (malignancy 85 per cent and benign adenoma 15 per cent). In Group II malignancy was found in 16 per cent and benign pathology in 84 per cent. Women were more likely to have malignancy than men. The average age was over 50 years in patients with either malignant or benign nodules. In addition there was no significant difference in average size of benign or malignant nodules (2.9 vs 2.6 cm respectively). When an FNAB finding was suggestive of neoplasm malignancy was found in 85 per cent. On the other hand when an FNAB was inconclusive malignancy was present in 16 per cent. Thus we conclude that using FNAB finding can guide surgical resection and recommend performing total or subtotal thyroidectomy when FNAB is suggestive of neoplasm and lobectomy when FNAB is inconclusive.