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Table 3 characteristics of patients with relapse

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

Pt

ASTRO group

Type of relapse

Age at surgery

Histologic features

TTP (months)

Dose (Gy)

D90 (%)

V100 (%)

DHI

1

Unsuitable

Local

79.2

IDC

32.9

34

103.2

92.2

0.44

  

Regional

 

19 mm

     
  

Metastatic

 

pN0

     
    

grade 2

     
    

ER + PR-

     
    

HER2-

     

2

Suitable

Metastatic

73.8

IDC

63.1

32

107

93.4

0.40

    

18 mm

     
    

pN0

     
    

grade 1

     
    

ER + PR-

     
    

HER2-

     

3

Unsuitable

Synchronous

83.5

IDC

27.3

34

69.7

75

0.44

  

regional and

 

27 mm

     
  

metastatic

 

pN1

     
    

grade 3

     
    

HR-

     
    

HER2-

     
  1. IDC: invasive ductal carcinoma; TTP: time to progression; D90: dose delivered to 90% of the CTV; V100: part of the CTV receiving 100% of the prescribed dose; DHI: Dose Homogeneity index (1-V150/V100).
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Radiation Oncology

ISSN: 1748-717X

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