Table 3 Clinicopathologic characteristics of ampullary carcinomas classified using a purist approach (analysis # 1)

From: Ampullary carcinoma is often of mixed or hybrid histologic type: an analysis of reproducibility and clinical relevance of classification as pancreatobiliary versus intestinal in 232 cases

Characteristics

Pure PB, N =74 (32%)

Mixed, N =94 (40%)

Pure INT, N =13 (6%)

P-value

Mean age (years)

66

64

66

NS

Gender male/female

0.9

1.7

2.3

NS

Mean tumor size (cm)

2.2a

2.7

4.5b

bP<0.001

Mean invasion size (cm)

1.7

1.9

2.5c

NS

Lymph node metastasis (%)

39

39

23

NS

Worse T stage (T3+T4) (%)

42

31

15

NS

Median survival period (mo)

40

56

80

NS

3-year survival rate (%)

50

51

78

NS

5-year survival rate (%)

29

33

56

NS

  1. Abbreviations: INT, intestinal; NS, not significant; PB, pancreatobiliary.
  2. a<0.001 between PB and Mixed+INT.
  3. b<0.001 between PB+Mixed and INT.
  4. c<0.05 between PB+Mixed and INT.
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