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Table 2 Malignancy rates per preoperative thyroid FNA diagnostic category

From: Thyroid Fine-needle aspiration biopsy: an evaluation of its utility in a community setting

FNA Result Malignancy rates
Unsatisfactory 6/49: 12.2% 2/17: 11.8%*
Benign 10/38: 26.3% 4/22: 18.0%*
Inconclusive 29/100: 29% 22/76: 28.9%*
Suspicious for malignancy 6/8: 75% 6/8: 75%*
Malignant 2/2: 100% 2/2: 100%*
Overall 26.9% 28.8%*
  1. *using most malignant FNA for those patients with more than one preoperative FNA.
  2. FNA: fine-needle aspiration biopsy.