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Table 1 Patients’ demographics and clinicopathological characteristics (n = 290)

From: Tertiary lymphoid structures are associated with higher tumor grade in primary operable breast cancer patients

Age at diagnosis

Patients (n, %)

<40

7 (2.4)

40-50

53 (18.3)

51-60

71 (24.5)

>60

159 (54.8)

Diagnosis

 

Invasive carcinoma (NST)

208 (71.7)

ILC

31 (10.7)

DCIS

33 (11.4)

Other

18 (6.2)

DCIS status*

 

Invasive carcinomas without DCIS

93 (36.3)

Invasive carcinomas with DCIS

163 (63.7)

DCIS grade

 

DCIS grade 1-2

77 (39.3)

DCIS grade 3

119 (60.7)

Hormone receptor status

 

ER neg / pos / na

44 (15.2) / 210 (72.4) / 36 (12.4)

PR neg / pos / na

59 (20.3) / 122 (42.1) / 109 (37.6)

HER2 neg / pos / na

215 (74.1) / 40 (13.8) / 35 (12.1)

Tumor size

 

≤20 mm

159 (62.1)

21- 50 mm

87 (34.0)

>50 mm

10 (3.9)

Histological grade*

 

1

85 (33.3)

2

121 (47.5)

3

49 (19.2)

Lymph node involvement

 

Negative

204 (70.3)

Positive

86 (29.7)

Involved lymph nodes

 

1-3

62 (72.1)

>3

24 (27.9)

Immune cell infiltration*

 

No infiltration

39 (13.5)

Mild infiltration

144 (49.8)

Moderate infiltration

90 (31.1)

Extensive infiltration

16 (5.6)

Aggregate formation*

 

Negative

143 (49.5)

Positive

146 (50.5)

TLS formation*

 

Negative

175 (61.4)

Positive

110 (38.6)

  1. Abbreviations: NST invasive carcinoma of no special type, ILC invasive lobular carcinoma, DCIS ductal carcinoma in situ, other invasive carcinomas include: tubular carcinoma, cribriform carcinoma, mucinous carcinoma, medullary carcinoma, apocrine carcinoma, metaplastic carcinoma, papillary carcinoma, ER estrogen receptor, PR progesterone receptor, HER2 human epidermal growth factor receptor 2, TLS tertiary lymphoid structures, na not analysed. *Patient(s) data missing.