Table 1 Comparison of the clinicopathological characteristics between gastric-type differentiated adenocarcinoma and intestinal-type differentiated adenocarcinoma

Patient characteristics

 Age (years), mean ± SD

65.0 ± 9.4

65.3 ± 8.5

0.898

 Gender (male/female)

233/74

80/29

0.603

Pathological diagnosis

Tumor size(mm), mean ± SD

19.9 ± 13.3

18.2 ± 10.8

0.557

Histology, n (%)

0.088

 Tub1

234 (76.2)

94 (86.2)

 Tub2

67 (21.8)

14 (12.8)

 Pap

6 (2.0)

1 (0.9)

Depth of invasion, n (%)

0.007

 M

236 (76.9)

99 (90.8)

 SM1

40 (13.0)

6 (5.5)

 SM2

31 (10.1)

4 (3.7)

Lymphatic invasion, n (%)

1

 Positive

4 (1.3)

1 (0.9)

 Negative

303 (98.7)

108 (99.1)

Vascular invasion, n (%)

1

 Positive

1 (0.3)

1 (0.9)

 Negative

306 (99.7)

108 (99.1)

Incisal margin

1

 Positive

3 (1.0)

1 (0.9)

 Negative

304 (99.0)

108 (99.1)

Basal margin

0.930

 Positive

8 (2.6)

4 (3.7)

 Negative

299 (97.4)

105 (96.3)

Ulcer

0.798

 Positive

15 (4.9)

2 (1.8)

 Negative

292 (95.1)

107 (98.2)

Macroscopic type

0.124

 Elevated

104 (33.9)

46 (42.2)

 Flat

77 (25.1)

30 (27.5)

 Depressed

126 (41.0)

33 (30.3)

Macroscopic findings, n (%)

Location

0.278

 Upper third

104 (33.9)

34 (31.2)

 Middle third

47 (15.3)

24 (22.0)

 Lower third

156 (50.8)

51 (46.8)

Background mucosa

0.478

 Atrophic

257 (83.7)

88 (80.7)

 Non-atrophic

50 (16.3)

21 (19.3)

Background mucosa

0.447

 Intestinal metaplasia

255 (83.1)

87 (79.8)

 Non-intestinal metaplasia

52 (16.9)

22 (20.2)