Table 1

Characteristics of ampullary carcinoma and survival time of patients.

Variable

N (%)

Survival

(months)

time

P value

Immunohistochemical Staining

CK7^-

40 (33.3)

41.0 ± 20.0

0.166

CK7⁺

80 (66.7)

36.0 ±3.7

CK20^-

35 (39.2)

31.0 ± 24.3

0.316

CK20⁺

85 (70.8)

38.0 ± 3.2

OPN^-

64 (53.3)

69.0 ± 18.4

0.062

OPN⁺

56 (46.7)

36.0 ± 1.3

Total

120 (100)

38 ± 11.3

Tumor Differentiation

0.408

Low

34 (28.3)

35.0 ± 3.4

Medium

37 (30.8)

36.0 ± 15.7

High

49 (40.8)

41.0 ± 18.9

Tumor Invasion

0.332

T1

57 (47.5)

71.0 ± 23.0

T2

16 (13.3)

69.0 ± 0.0

T3

47 (39.2)

35.0 ± 5.9

Lymph node metastasis

0.275

No

88 (73.3)

38.0 ± 3.6

Yes

32 (26.7)

40.0 ± 24.8

Survival time is expressed as median ± SD and p-values were calculated by the log-rank test.

Zhao et al. Diagnostic Pathology 2011 6:98   doi:10.1186/1746-1596-6-98