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Table 1 Patients and tumor characteristics

From: Accelerated partial breast irradiation in the elderly: 5-year results of high-dose rate multi-catheter brachytherapy

Characteristics

n

%/range

Median age

81.4

[62 – 93]

APBI category

  

 Suitable

43

61.4

 Cautionary

13

18.6

 Non suitable

14

20

Histological subtype

  

 IDC

61

87.1

 ILC

3

4.3

 OIC

1

1.4

 DCIS

5

7.1

Median tumor size (mm)

  
 

11

[1.3 – 35]

pN category

  

 pNx

4

5.7

 pN0

58

82.9

 pN1

7

10.1

 pN2

1

1.4

Histological grading

  

 1

24

34.3

 2

28

40

 3

16

22.9

 unknown

2

2.8

Hormonal status

  

 ER+/PR+

43

61.4

 ER+/PR-

14

20

 ER-/PR+

2

2.9

 ER-/PR-

6

8.6

 unknown

5

7.1

Her2 status

  

 negative

55

78.6

 +

1

1.4

 ++

3

4.3

 +++

6

8.6

 unknown

5

7.1

LVI

  

 yes

3

4.3

 no

19

27.1

 unknown

48

68.6

PNI

  

 yes

1

1.4

 no

14

20

 unknown

55

78.6

Median Ki67 (%)

  

 12.5

[5 – 40]

 

EIDC

  

 yes

5

7.1

 no

61

87.2

 unknown

4

5.7

Clear margins

  
 

70

100

Systemic therapy

  

 HT

  

  yes

56

80

  no

14

20

 CT

  

  yes

3

4.3

  no

67

95.7

  1. IDC invasive ductal carcinoma, ILC invasive lobular carcinoma, OIC other invasive carcinoma, DCIS ductal carcinoma in situ, LVI Lympho-vascular invasion, PNI Peri-neural invasion, EIDC Extensive intra-ductal component, HT Hormonal therapy, CT Chemotherapy.