Table 3 Influence of tumour size, nuclear grade, necrosis and age on treatment modality (number and percent patients)

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

 

CS

CS+RT

Mastectomy

Total

 

N

%

N

%

N

%

N

%

Tumour size (pT, mm) a

10

62

14.4

339

78.6

30

7

431

40.6

 11–20

14

4.8

223

76.6

54

18.6

291

27.4

 >20

5

1.5

120

35.3

215

63.2

340

32

Grade b

 Low

56

20.9

171

63.8

41

15.3

268

21

 Intermediate

30

6.2

322

65.7

138

28.1

490

38.5

 High

12

2.3

294

57.1

209

40.6

515

40.5

Necrosis c

 None necrosis

68

13.4

334

65.9

105

20.7

507

42

 No comedo necrosis

15

6.6

136

59.6

77

33.8

228

19

 Comedo necrosis

9

1.9

271

57.2

194

40.9

474

39

Age (years)

 <50

26

26.2

203

25.5

141

35.9

370

28.7

 50–60

41

41.4

284

35.6

136

34.6

461

35.8

 61–70

14

14.1

198

24.8

73

18.6

285

22.1

 >70

18

18.2

112

14.1

43

10.9

173

13.4

  1. Abbreviations: CS=conservative surgery; RT=radiotherapy.
  2. Evaluable cases: a1062 (82.4%); b1273 (98.7%); and c1209 (93.8%).