Table 2.
Histology and TNM staging (AJCC/UICC) of the tumors at the time of diagnosis: in this table we present prevalences and P values referring to chi-square test.
| UBC | 1st MBC | 2nd MBC | 1st SBC | 2nd SBC | P | |
|---|---|---|---|---|---|---|
| Histology | ||||||
| Ductal invasive carcinoma | 65.91% (348/528) | 69.23% (27/39) | 65% (26/40) | 43.75% (7/16) | 68.75% (11/16) | 0.447 |
| Lobular invasive carcinoma | 8.9% (47/528) | 15.38% (6/39) | 12.5% (5/40) | 37.5% (6/16) | 6.25% (1/16) | <0.05 |
| Ductal and lobular invasive carcinoma | 13.45% (71/528) | 7.69% (3/39) | 5% (2/40) | 12.5% (2/16) | 6.25% (1/16) | 0.418 |
| Other invasive carcinomas | 3.41% (18/528) | 2.56% (1/39) | 0% (0/40) | 0% (0/16) | 6.25% (1/16) | 0.645 |
| Ductal in situ carcinoma | 7.39% (39/528) | 5.13% (2/39) | 17.5% (7/40) | 6.25% (1/16) | 6.25% (1/16) | 0.212 |
| Lobular in situ carcinoma | 0.38% (2/528) | 0% (0/39) | 0% (0/40) | 0% (0/16) | 0% (0/16) | 0.981 |
| Unknown | 0.57% (3/528) | 0% (0/39) | 0% (0/40) | 0% (0/16) | 6.25% (1/16) | 0.067 |
| Tumor (UICC) | ||||||
| Tis-T1 | 67.94% (356/524) | 68.42% (26/38) | 70% (28/40) | 62.5% (10/16) | 75% (12/16) | 0.957 |
| T2 | 24.43% (128/524) | 26.32% (10/38) | 22.5% (9/40) | 37.5% (6/16) | 18.75% (3/16) | 0.755 |
| T3-T4 | 7.63% (40/524) | 5.26% (2/38) | 7.5% (3/40) | 0% (0/16) | 6.25% (1/16) | 0.806 |
| Lymph nodes (UICC) | ||||||
| N0 | 66.86% (347/519) | 75.68% (28/37) | 70% (28/40) | 56.25% (9/16) | 93.75% (15/16) | 0.122 |
| N1 | 19.27% (100/519) | 16.22% (6/37) | 15% (6/40) | 18.75% (3/16) | 6.25% (1/16) | 0.690 |
| N2 | 7.51% (39/519) | 2.7% (1/37) | 10% (4/40) | 12.5% (2/16) | 0% (0/16) | 0.476 |
| N3 | 6.36% (33/519) | 5.41% (2/37) | 5% (2/40) | 12.5% (2/16) | 0% (0/16) | 0.679 |