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Table 2 CT findings of 136 patients with GEPs and GST

From: CT differentiation of gastric ectopic pancreas from gastric stromal tumor

CT features

GEPs (n = 17)

GST (n = 119)

P value

Univariate

Multivariate

Qualitative analysis

    

Location

  

0.006

0.021

 Cardia

1 (5.9%)

9(7.6%)

1.000

 

 Fundus

0 (0%)

41 (34.4%)

0.004

 

 Body

11 (64.7%)

56(47.1%)

0.173

 

 Antrum

5(29.4%)

13 (10.9%)

0.085

 

Contour

  

0.034a

0.747

 Round

5 (29.4%)

36(30.3%)

0.944

 

 Oval

10 (58.8%)

36(30.3%)

0.020

 

 Irregular

2 (11.8%)

47 (39.5%)

0.026

 

Growth pattern

  

0.232a

 

 Endophytic

4 (23.5%)

57 (47.9%)

0.059

 

 Exophytic

11 (64.7%)

45 (37.8%)

0.035

 

 Mixed

2 (11.8%)

17 (14.3%)

1.000

 

Peritumoral infiltration or fat-line of peritumor

  

 < 0.001a

0.001

 Yes

6 (35.3%)

3 (2.5%)

  

 No

11 (64.7%)

116 (97.5%)

  

Necrosis

1 (5.9%)

41 (34.5%)

 < 0.001a

0.048

Calcification

0 (0%)

23 (19.3%)

0.048a

0.211

Surface ulceration

0 (0%)

11 (9.2%)

0.193a

 

Lymph node

0 (0%)

1 (0.8%)

1.000a

 

Quantitative analysis

    

CT attenuation value

    

 CTu (HU)

40.55 ± 8.67

34.24 ± 7.19

 < 0.001b

0.600

 CTa(HU)

71.35 ± 19.49

54.57 ± 13.77

0.01b

0.901

 CTp(HU)

95.09 ± 13.15

68.92 ± 17.87

0.003b

0.752

Degree of enhancement

    

 DEAP

37.44 ± 15.70

20.37 ± 11.81

 < 0.001b

0.047

 DEPP

54.49 ± 17.69

34.26 ± 15.57

 < 0.001b

0.762

 LD (mm)

21.94 ± 11.81

35.26 ± 23.51

0.001b

0.097

 SD (mm)

16.06 ± 6.07

28.55 ± 16.56

 < 0.001b

0.069

 LD/SD

1.329 ± 0.29

1.229 ± 0.21

0.07

 
  1. P values written in bold indicate a significant difference between the tumors. CTu/CTa/CTp = the CT attenuation value of unenhancement phase/arterial phase/portal venous phase; DEAP = the CT attenuation value of arterial phase—unenhanced phase; DEPP = the CT attenuation value of portal venous phase—unenhanced phase; LD = long diameter; SD = short diameter. Multivariate analysis was performed using logistic regression
  2. aχ2 test
  3. bIndependent t test