Table 1 Patient, tumour, and treatment characteristics
Age | Median | 55 years | |
Range | 29-84 years | ||
Menopausal status | Pre- or peri-menopause | 181 | 31% |
Menopause | 395 | 67% | |
Unknown | 10 | 2% | |
Diagnosis modalities | Mammography alone | 387 | 66% |
Clinical signs and mammography | 176 | 30% | |
Clinical signs alone | 23 | 4% | |
Mammographic pattern | Microcalcifications | 393 | 67% |
Solitary mass | 129 | 22% | |
Microcalcifications + mass | 41 | 7% | |
Negative | 23 | 4% | |
Surgical management | Quadrantectomy | 434 | 74% |
Tumorectomy | 88 | 15% | |
Wide excision | 64 | 11% | |
Axillary dissection | Yes* | 240 | 41% |
No | 346 | 59% | |
Tumour pathological size | ≤ 10 mm | 222 | 38% |
11-29 mm | 203 | 34.5% | |
≥ 30 mm | 33 | 5.5% | |
Unknown | 128 | 22% | |
Histological subtypes | Comedo | 164 | 28% |
Cribriform | 164 | 28% | |
Papillary | 94 | 16% | |
Solid | 64 | 11% | |
Other | 100 | 17% | |
Margin status | Positive | 4 | 1% |
Close | 29 | 5% | |
Negative | 65 | 11% | |
Unknown | 488 | 83% | |
ER/PR status | Positive | 253 | 43% |
Negative | 64 | 11% | |
Unknown | 269 | 46% | |
Radiotherapy technique | 60 Cobalt Unit | 311 | 53% |
Linear Accelerator | 275 | 47% | |
Radiotherapy dose | Median | 50 Gy | |
Range | 45 - 60 Gy | ||
Boost | No | 291 | 49.5% |
Direct electron field | 234 | 40% | |
Orthovoltage photons | 58 | 10% | |
Interstitial brachytherapy | 3 | 0.5% | |
Boost dose | Median | 10 Gy | |
Range | 8 - 20 Gy |