Table 5.
Characteristics of second MBC stratified per time interval after diagnosis of first MBC. We considered as cutoff the median time interval that was 47 months. In this table we present mean values (±standard deviation) and one way ANOVA* or prevalences and chi-square test.
| ≤47 moths | >47 months | P | |
|---|---|---|---|
| Women age (years)* | 63.14 (±14.22) | 54.67 (±13.47) | <0.05 |
| BMI (kg/m2)* | 25.2 (±4.01) | 26.6 (±7.08) | 0.448 |
| Multifocality | 28.57% (6/21) | 26.32% (5/19) | 0.873 |
| Extended in situ component | 42.86% (9/21) | 21.05% (4/19) | 0.141 |
| Peritumoral vascular invasion | 9.52% (2/21) | 5.26% (1/19) | 0.609 |
| ER positivity | 57.14% (12/21) | 78.95% (15/19) | 0.141 |
| PR positivity | 42.86% (9/21) | 78.95% (15/19) | <0.05 |
| HER-2/Neu positivity | 14.29% (3/21) | 10.53% (2/19) | 0.720 |
| Histology | |||
| Ductal invasive carcinoma | 61.9% (13/21) | 68.42% (13/19) | 0.666 |
| Lobular invasive carcinoma | 23.81% (5/21) | 0% (0/19) | <0.05 |
| Ductal and lobular invasive carcinoma | 4.76% (1/21) | 5.26% (1/19) | 0.942 |
| Ductal in situ carcinoma | 9.52% (2/21) | 26.32% (5/19) | 0.163 |
| Grading | |||
| G1 | 14.29% (3/21) | 0% (0/19) | 0.087 |
| G2 | 47.62% (10/21) | 63.16% (12/19) | 0.324 |
| G3 | 38.1% (8/21) | 36.84% (7/19) | 0.935 |
| Mib-1/Ki-67 (%) | |||
| 1 to 20 | 43.75% (7/16) | 11.11% (1/9) | 0.093 |
| 20 to 30 | 12.5% (2/16) | 11.11% (1/9) | 0.918 |
| >30 | 43.75% (7/16) | 77.78% (7/9) | 0.100 |