Table 2 Distribution of patients according to nodule size, primary tumor location, histopathological type and tumor grade

Umbilical nodule size

• ≤2 cm

10

29.4

• >2cm

24

70.6

Primary tumor site

• Stomach

14

41.2

• Colorectum

3

8.8

• Pancreas

2

5.9

• Ovary

2

5.9

• Gall bladder

1

2.9

• Anus

1

2.9

• Unknown

11

32.4

Histopathological type

• Adenocarcinoma

30

88.2

• Non-Hodgkin's lymphoma

1

2.9

• Squamous cell carcinoma

1

2.9

• Anaplastic carcinoma

1

2.9

• Cholangiocarcinoma

1

2.9

Tumor differentiation

• Well differentiated

5

14.7

• Moderately differentiated

6

17.6

• Poorly differentiated

18

52.9

• Not documented

5

14.7