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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).