Table 1. Tumour and treatment characteristics according to the histological type of the invasive breast carcinoma.
|
Ductal (N=672)
|
Lobular (N=78)
|
||||
|---|---|---|---|---|---|
| Total | N | % | N | % | P |
| Age (DM=0) | <10−2 | ||||
| Median (min–max) in years | 46 (24–70) | 49 (39–68) | |||
| Menopause (DM=0) | 0.88 | ||||
| Yes | 167 | 25 | 20 | 26 | |
| No | 505 | 75 | 58 | 74 | |
| Clinical T stage (DM=0) | 0.03 | ||||
| T2 | 506 | 75 | 50 | 64 | |
| T3 | 166 | 25 | 28 | 36 | |
| Clinical N stage (DM=0) | 0.16 | ||||
| N0 | 411 | 61 | 54 | 69 | |
| N1 | 261 | 39 | 24 | 31 | |
| Tumour clinical maximal diameter (DM=0) | <10−3 | ||||
| Median (min–max) in mm | 40 (20–70) | 50 (25–70) | |||
| Histological grade (DM=4)a | <10−3 | ||||
| 1 | 82 | 12 | 32 | 41 | |
| 2 | 332 | 50 | 30 | 38 | |
| 3 | 210 | 31 | 7 | 9 | |
| Mitoses per 10 HPF (DM=72) | <10−3 | ||||
| (0–10) | 129 | 21 | 53 | 80 | |
| (11–21) | 182 | 30 | 7 | 11 | |
| ⩾22 | 291 | 48 | 6 | 9 | |
| Hormonal receptors (DM=118) | 0.02 | ||||
| ER+ and/or PR+ | 412 | 73 | 54 | 87 | |
| ER−/PR− | 158 | 28 | 8 | 13 | |
HPF=high-power field; DM=data missing.
Menopause defined, for women with intact uterus, as 2 years of amenorrhea and for the others, biologically.
Percentages were rounded, so, when added, the sum may not be exactly 100.
a
Fifty-three tumours (44 ductal and 9 lobular) could not be evaluated.