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Table 2 Diagnostic performance of MRI on axillary lymph node evaluation between BMI groups

From: The impact of body mass index (BMI) on MRI diagnostic performance and surgical management for axillary lymph node in breast cancer

 

Total

N = 2084

BMI

< 18.5

N = 71

BMI

18.5 ~ < 24

N = 1045

BMI

24~ ≥ 35

N = 968

p value

ALN metastasis on MRI

    

< 0.01†

 Yes

893 (42.9)

13 (18.3)

394 (37.7)

486 (50.2)

 

 No

1191 (57.1)

58 (81.7)

651 (62.3)

482 (49.8)

 

ALN metastasis on pathology

    

0.09

 Yes

738 (35.4)

22 (31.0)

350 (33.5)

366 (37.8)

 

 No

1346 (64.6)

49 (69.0)

695 (66.5)

602 (62.2)

 

MRI diagnostic performance

 Sensitivity (%)

63.7

40.9

58.3

70.2

< 0.01†

 Specificity (%)

68.6

91.8

72.7

62.0

< 0.01†

 PPV (%)

52.6

69.2

51.8

52.9

0.46

 NPV (%)

77.5

77.6

77.6

77.4

1.00

 Accuracy (%)

66.8

76.1

67.8

65.1

0.10

  1. †Statistically significant difference
  2. PPV positive predictive value, NPV negative predictive value