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Table 1 The results of a study of lymph node metastasis in patients with pedunculated early-stage colorectal cancer

From: Pedunculated early colorectal cancer with nodal metastasis: a case report

Author

Published year

Number of patients

Number of surgical resection

Rate of lymph node metastasis

Rate of lymph node metastasis

Head invasion

Stalk invasion

Shatney

1976

28

23

4% (1/23)

0% (0/14)

1% (1/9)

Nivatvongs

1978

16

3

33% (1/3)

0% (0/2)

100% (1/1)

Colacchio

1981

39

24

25% (6/24)

29% (5/17)

14% (1/7)

Cooper

1983

49

29

14% (4/29)

0% (0/26)

17% (4/23)

Pines

1990

43

19

0% (0/19)

0% (0/11)

0% (0/8)

Matsuda

2011

384

230

3.5% (8/230)

0% (0/101)

6.2% (8/129)

Asayama

2016

176

81

4.9% (4/81)

2.4% (1/41)

7.5% (3/40)

Kimura

2016

76

76

11.8% (9/76)

13.3% (4/30)

10.9% (5/46)