Skip to main content

Table 2 Tumor characteristics

From: Role of patient and tumor characteristics in sentinel lymph node metastasis in patients with luminal early breast cancer: an observational study

Histology—N (%)

 

 Ductal

199 (57.7)

 Lobular

56 (16.2)

 Mixed

56 (16.2)

 Othera

34 (9.9)

Average tumor size (mm)

 

 Mean (SD)

15.66 (7.90)

 Min–max

1.00–50.00

Tumor size, distribution—N (%)

 

 T < 20 mm

261 (75.7)

 20 mm < T ≤ 50 mm

84 (24.3)

Site of tumor—N (%)

 

 QII

21 (6.1)

 QSI

46 (13.3)

 QSE

225 (65.2)

 QIE

45 (13.0)

 CENTRAL

8 (2.3)

Ki-67—(% expression)

 

 Mean (SD)

15.02 (10.18)

 Min–max

5.00–80.00

Distribution of Ki-67 expression levels—N (%)

 

 Low (0–13 % of cells)

198 (57.4)

 Intermediate (14–9 % of cells)

60 (17.4)

 High (≥20 % of cells)

87 (25.2)

Patients with ER positivity—N (%)

297 (86.1)

 ER positivity per patient—(% expression)

 

 Mean (DS)

65.23 (33.35)

 Min–max

0.00–100.00

Patients with PGR positivity—N (%)

275 (79.7)

 PgR ≥20 % expression

238 (69.0)

 PgR positivity per patient—(% expression)

 

  Mean (SD)

50.83 (36.59)

  Min–max

0.00–100.00

Patients with HER2 positivity—N (%)

45 (13.0)

 Distribution of histological grades—N (%)

 

  Grade 1

69 (20.0)

  Grade 2

175 (50.7)

  Grade 3

101 (29.3)

Tumor subtypes—N (%)

 

 Patients with luminal subtype

297 (86.1)

  luminal A

225 (75.8)

  luminal B

72 (24.2)

 Patients with HER 2 subtype

21 (6.1)

 Patients with triple negative subtype

27 (7.8)

Patients with LVI—N (%)

109 (31.6)

Patients with extensive DCIS/LCIS

98 (28.4)

  1. Min–max minimum and maximum values, LVI LymphoVascular Invasion, DCIS Ductal Carcinoma In Situ, LCIS Lobular Carcinoma In Situ
  2. aOther histological descriptions: mucinous; tubular; apocrine; medullary; papillary