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Table 6 Comparison of malignancy rates per preoperative thyroid FNA diagnostic category between our center and other published studies using the most malignant FNA per patient at our center

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

FNA Result Blansfield et al. Postma et al. Wu et al. Williams et al. Our study
Unsatisfactory 0/11 = 0% 0/0 = 0% 3/21 = 14.2% 10/55 = 18.2% 2/17 = 11.8%
Benign 3/44 = 6.8% 0/28 = 0%* 2/63 = 3.1%* 15/94 = 16.0% 4/22 = 18.0%
Inconclusive 25/85 = 29.4% 3/47 = 6%* 14/100 = 14.0% 55/208 = 26.4% 22/76 = 28.9%
Suspicious for malignancy 8/14 = 57.1% 5/6 = 83% 10/18: 55.6% 16/17: 94.1% 6/8: 75.0%
Malignant 27/29 = 93.1% 2/2 = 100% 19/19 = 100% 14/14 = 100% 2/2: 100%
Total 63/183 = 34.4% 10/83 = 12.0% 48/221 = 21.7% 110/388 = 28.4% 36/125 = 28.8%
  1. *Fisher’s exact p < 0.05.
  2. FNA: fine-needle aspiration.