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Table 6 Summary of previous studies of skip metastasis in PTC (0.6–37.5%)

From: Skip metastasis in papillary thyroid carcinoma is difficult to predict in clinical practice

Authors

Year

LLNM Positive

Skip Positive

Skip rate(%)

Initial Operation

Predictive Factors

Reference

Ducci, Appetecchia et al.

1997

ND

ND

11.1

ND

ND

[11]

Coatesworth and MacLennan

2002

ND

ND

37.5

ND

ND

[12]

Koo, Lim et al.

2010

70

12

17.1

Not for All

NA

[13]

Machens, Holzhausen et al.

2004

66

13

19.7

Not for All

Fewer Positive Lymph Nodes

[8]

Lee, Wang et al.

2007

46

3

6.5

Yes

NA

[14]

Roh, Park et al.

2007

22

3

13.6

Recurrence

NA

[6]

Roh, Kim et al.

2008

52

5

9.6

Yes

NA

[15]

Wada, Masudo et al.

2008

151

17

11.3

Yes

NA

[16]

Chung, Kim et al.

2009

12

3

25

Yes

NA

[17]

Xiao and Gao

2010

64

9

14.1

Yes

NA

[18]

Kim

2012

490

3

0.6

Yes

NA

[19]

Kliseska and Makovac

2012

42

8

19.5

ND

ND

[20]

Lim and Koo

2012

90

17

19

Yes

Lymphovascular Invasion, Extracapsular SpreadAnd fewer Positive Lymph Nodes

[21]

Park, Lee et al.

2012

147

32

21.8

Yes

Single Focus; Locatedupper; Microcarcinoma

[22]

Lee, Shin et al.

2014

131

9

6.8

Yes

Located upper

[23]

Xiang, Xie et al.

2015

44

11

25

Yes

NA

[24]

  1. NA None analysis; ND No data