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Table 1 Characteristics of the patients

From: Preliminary study of contrast-enhanced ultrasound in combination with blue dye vs. indocyanine green fluorescence, in combination with blue dye for sentinel lymph node biopsy in breast cancer

Characteristics

CEUS + blue dye (n = 127)

ICG + blue dye (n = 316)

P

Age, years

  

0.891

 Mean ± SD

45.0 ± 14.5

46.9 ± 15.0

 

Menopausal status, n (%)

  

0.987

 Premenopausal

72 (56.7)

180 (57.0)

 

 Postmenopausal

47 (37.0)

115 (36.4)

 

 Unknown

8 (6.3)

21 (6.6)

 

Tumor stage, n (%)

  

0.287

 T1

80 (63.0)

217 (68.7)

 

 T2

40 (31.5)

90 (28.5)

 

 T3

7 (5.5)

9 (2.8)

 

Tumor grade, n (%)

  

0.466

 G1

20 (15.7)

54 (17.1)

 

 G2

64 (50.4)

139 (44.0)

 

 G3

43 (33.9)

123 (38.9)

 

Tumor stage, n (%)

  

0.841

 I

74 (58.3)

193 (61.1)

 

 II

50 (39.4)

117 (37.0)

 

 III

3 (2.3)

6 (1.9)

 

LVI, n (%)

  

0.745

 Yes

7 (5.5)

20 (6.3)

 

 No

120 (94.5)

296 (93.7)

 

ER status, n (%)

  

0.682

 Positive

97 (76.4)

230 (72.8)

 

 Negative

23 (18.1)

69 (21.8)

 

 unknown

7 (5.5)

17 (5.4)

 

PR status, n (%)

  

0.768

 Positive

91 (71.7)

219 (69.4)

 

 Negative

29 (22.8)

82 (25.9)

 

 unknown

7 (5.5)

15 (4.7)

 

HER2 status, n (%)

  

0.879

 Positive

24 (18.9)

56 (17.7)

 

 Negative

95 (74.8)

243 (76.9)

 

 Equivocal /unknown

8 (6.3)

17 (5.4)

 

Breast surgery, n (%)

  

0.518

 Lumpectomy

50 (39.4)

135 (42.7)

 

 Mastectomy

77 (60.6)

181 (57.3)

 
  1. CEUS Contrast-enhanced ultrasound, ICG Indocyanine green, SD Standard deviation, LVI Lymphovascular invasion, ER Estrogen receptor, PR Progesterone receptor, HER2 Human epidermal growth factor receptor 2