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Table 4 Comparison of malignancy rates by FNA category among this study, the Bethesda System, and published values in other studies

From: Rates of thyroid malignancy by FNA diagnostic category

FNA category

This study n = 388

Bethesda range

Yang et al., 2007[3] n = 1052

Jo et al., 2010[4] n = 892

Wu, 2011[5] n = 221

Unsatisfactory

18.2

1-4

10.9

8.9

14

Benign

16.0

0-3

7.3

6.5

3

Abnormal

24.7

5-15

13.5

17

6

SFN

32.6

15-30

32.2

25.4

22

SFM

94.1

60-75

64.7

70

56

Malignant

100.0

97-99

98.6

98.1

100

Overall

28.4

--

45.3

31.3

29.0

  1. FNA – fine needle aspiration, SFN – Suspicious for Neoplasm, SFM – Suspicious for Malignancy.
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Journal of Otolaryngology - Head & Neck Surgery

ISSN: 1916-0216

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