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) |