Table 1 Correlation between number of extra surgical procedures and pre-operative biopsy (percent patients)

From: Breast-conserving surgery with or without radiotherapy vs mastectomy for ductal carcinoma in situ: French Survey experience

Number of extra surgical procedures

No biopsy

SCNB

VANB

CS and CS+RT

n=257

n=175

n=334

 1

72.4

83.4

92.3

 2 or 3

27.6

16.6

7.7

Mastectomy

n=138

n=91

n=163

 1

10.1

53.8

58.3

 2 or 3

89.9

46.2

41.7

  1. Abbreviations: CS=conservative surgery; RT=radiotherapy; SNCB=stereotactic core-needle biopsy; VANB=vacuum-assisted needle biopsy.
  2. P<0.0001 for each comparison between treatments according to χ2-test.
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