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Table 1

From: Radiotherapy for screen-detected ductal carcinoma in situ: indications and utilization in the United Kingdom – findings from the Sloane Project

  Received radiotherapy Did not receive radiotherapy
Margin   
   <1 mm 34 36
   1–9 mm 152 111
   ≥10 mm 129 100
Size   
   ≤15 mm 161 213
   16–40 mm 153 58
   ≥41 mm 14 5
Grade   
   High 243 95
   Intermediate 83 126
   Low 12 57