Table 4 Pathological characteristics of 19 micropapillary ductal carcinoma in situ from a series of 338 consecutive ductal carcinoma in situ

From: Micropapillary ductal carcinoma in situ of the breast: an inter-institutional study

 

Micropapillary ductal carcinoma in situ (%)

Non micropapillary ductal carcinoma in situ (%)

P-value

 

19 (100)

319 (100)

 

Nuclear grade

 Low

5 (26)

96 (30)

0.014

 Intermediate

1 (5)

99 (31)

 

 High

13 (69)

124 (39)

 

Extent (mm)

 <20

12 (63)

253 (79)

0.096

 >20

7 (37)

66 (21)

 

Extent (mm)

 Mean

20

17

0.361

 Median

18

12

 

Necrosis

 Yes

11 (58)

224 (70)

0.256

 No

8 (42)

95 (30)

 

Microinvasion

 Yes

5 (26)

54 (17)

0.337

 No

14 (74)

253 (79)

 

 Unknown

0

12 (4)