Table 7 Regional variations in histopathological features and treatment modalities (% patients)

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

 

Paris

Northwest

Northeast

Southwest

Southeast

% of high-grade lesions

33

43

44

49

40

% of comedocarcinoma subtype

10

20

26

43

27

% ER assessment

14

12

60

53

31

CS

3

3

8

13

4

Median size (mm)a

8

2.5

5

4

7

CS+RT

77

60

57

61

63

Mastectomy

20

37

35

26

33

Median size (mm)b

40

30

42

27

40

IR

39

64

37

66

64

Hormone therapy

13

6

34

9

12

  1. Abbreviations: CS=conservative surgery; ES=oestrogen receptor; IR=immediate reconstruction; RT=radiotherapy.
  2. aIn patients treated by CS alone.
  3. bIn patients treated by mastectomy.
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