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Table 2 Correlation of FNA category to surgical pathology and overall malignancy rate for each category

From: Rates of thyroid malignancy by FNA diagnostic category

FNA category

Surgical pathology (%)

Malignancy rate (%)

PTC

FTC

MTC

Other

Unsatisfactory

14.5

0.0

0.0

3.6

18.2

Benign

14.9

0.0

0.0

1.1

16.0

Abnormal

22.2

1.2

0.6

0.6

24.7

SFN

23.9

6.5

0.0

2.2

32.6

SFM

76.5

0.0

11.8

5.9

94.1

Malignant

100.0

0.0

0.0

0.0

100.0

  1. Values are expressed as percentages of all FNAs in each category. FNA – fine needle aspiration, SFN – Suspicious for Neoplasm, SFM – Suspicious for Malignancy.