Table 2.
Comparison of pure and mixed mucinous breast cancer with NST cancer of the breast.
| MBC-total | PMBC | MMBC | NST | |
|---|---|---|---|---|
| Number of patients | 24 | 15 | 9 | 592 |
| Mean age at diagnosis | 66.0 | 64.1 | 69.7 | 60.0 |
| Patients aged over 80 | 2 | 2 | 0 | 28 |
| OS 5-year (%) | 95.8% | 100% | 88.9% | 75.3% |
| DFS 5-year (%) | 91.6% | 93.3% | 88.9% | 70.2% |
| Local recurrence (%) | 8.3% | 6.7% | 11.1% | 29.8% |
| Median size | 2.19 cm | 2.46 cm | 2.01 cm | 1.92 cm |
| Tumor size (T) (no, %) | ||||
| T1a | 1 (4.2) | 0 | 1 (11.1) | 12 (2.0) |
| T1b | 2 (8.3) | 1 (6.7) | 1 (11.1) | 54 (9.1) |
| T1c | 10 (41.7) | 5 (33.3) | 5 (55.6) | 232 (39.2) |
| T2 | 9 (37.5) | 8 (53.3) | 1 (11.1) | 248 (41.9) |
| T3 | 0 | 0 | 0 | 9 (1.5) |
| T4 | 2 (8.3) | 1 (6.7) | 1 (11.1) | 37 (6.3) |
| Nodal status (pN) (no, %) | ||||
| pN0 | 21 (87.5) | 14 (93.3) | 7 (77.8) | 354 (59.8) |
| pN1 | 2 (8.3) | 1 (6.7) | 1 (11.1) | 142 (24.0) |
| pN2 | 1 (4.2) | 0 | 1 (11.1) | 63 (10.6) |
| pN3 | 0 | 0 | 0 | 33 (5.6) |
| Tumor grade (no, %) | ||||
| G1 | 0 | 0 | 0 | 46 (7.8) |
| G2 | 22 (91.7) | 15 (100.0) | 7 (77.8) | 321 (54.2) |
| G3 | 2 (8.3) | 0 | 2 (22.2) | 189 (31.9) |
| Gx (necrosis/autolysis) | 0 | 0 | 0 | 36 (6.1) |
| Estrogen receptor status (no, %) | ||||
| ER− | 7 (29.2) | 3 (20.0) | 4 (44.4) | 215 (36.3) |
| ER+ | 17 (70.8) | 12(80.0) | 5 (55.6) | 377 (63.7) |
| Progesterone receptor status (no, %) | ||||
| PR− | 9 (37.5) | 4 (26.7) | 5 (55.6) | 241 (40.7) |
| PR+ | 15 (62.5) | 11 (73.3) | 4 (44.4) | 351 (59.3) |
| HER2 status (no, %) | ||||
| HER2 0/1+ | 20 (83.3) | 14 (93.3) | 6 (66.7) | 488 (82.4) |
| HER2 2+ | 0 | 0 | 0 | 32 (5.4) |
| HER2 3+ | 4 (16.7) | 1 (6.7) | 3 (33.3) | 72 (12.2) |