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Table 1 Rate of Malignancy by Thyroid Nodule Echogenic Foci Type

From: Echogenic foci in thyroid nodules: diagnostic performance with combination of TIRADS and echogenic foci

 

Total (n = 390)

Benign (n = 136)

Malignant (n = 254)

P value

Type 1

207 (53.1)

54(26.1)

153 (73.9)

< 0.001

Type 2

54 (13.8)

12(22.2)

42(77.8)

0.452

Type 3

94 (24.1)

41 (43.6)

53 (56.4)

0.041

Type 4

27 (6.9)

16 (59.3)

11 (40.7)

0.006

Type 5

21(5.4)

14 (66.7)

7 (33.3)

0.002

Type 6

41 (10.5)

11 (26.8)

30 (73.2)

0.253

  1. Data indicate the number of lesions
  2. Numbers in parentheses indicate percentages
  3. Type 1 = Punctate echogenic foci (≤ 1 mm) with or without posterior shadowing
  4. Type 2 = Punctate echogenic foci with comet-tail artifact
  5. Type 3 = Large echogenic foci (> 1 mm) without shadowing
  6. Type 4 = Macrocalcification (defined as large echogenic foci (> 1 mm) with shadowing)
  7. Type 5 = Peripheral curvilinear or eggshell echogenic foci with or without shadowing
  8. Type 6 = Nodules with more than one type of echogenic foci