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Table 2 Comparison of breast cancer events in prospective randomized trials of DCIS treatment

From: Breast-conserving surgery with or without radiotherapy in women with ductal carcinoma in situ: a meta-analysis of randomized trials

  EORTC 10853 [13] NSABP B17 [11] SWE DCIS [24] UK/ANZ DCIS [15]
  4 y follow up 4 follow up 5.2 follow up 4.3 y follow-up
  L L+RT CL L+RT L L+RT L L +RT
Type of cancer (n = 503) (n = 507) (n = 403) (n = 410) (n = 533) (n = 534) (n = 544) (n = 267)
Ipsilateral breast cancer         
Total 83 53 98 49 117 44 115 22
Invasive 40 24 66 29 69 23 39 10
No invasive 44 29 32 20 48 21 76 12
Contralateral Breast cancer         
Total 8 21 8 10 22 26 11 9
Invasive 5 16 5 8 15 23 6 9
No invasive 3 5 3 2 7 3 5 0
  1. L = Lumpectomy, RT = radiotherapy