Table 1.
Patient, tumour and treatment variables among patients who received 26 Gy in 5 fractions adjuvant breast cancer radiotherapy March-August 2020.
| Variable | No patients | (%) |
|---|---|---|
|
(a)Patient | ||
| Age, years at diagnosis | ||
| <40 | 1 | 1 |
| 40–49 | 7 | 5 |
| 50–59 | 33 | 24 |
| 60–69 | 50 | 37 |
| 70–79 | 39 | 29 |
| 80+ |
5 |
4 |
|
(b)Tumour | ||
| Breast cancer laterality | ||
| Left | 64 | 47 |
| Right | 71 | 53 |
| Histology Type | ||
| Ductal | 105 | 78 |
| Lobular | 11 | 8 |
| Mixed | 8 | 6 |
| Other | 11 | 8 |
| Tumour stage | ||
| Tis | 2 | 2 |
| T1 | 91 | 67 |
| T2 | 41 | 30 |
| T3 | 0 | 0 |
| T4 | 1 | 1 |
| Number of positive nodes | ||
| pN0 | 117 | 87 |
| pN1 (mi) | 12 | 9 |
| pN1a | 5 | 3 |
| pN2 | 1 | 1 |
| Oestrogen receptor status | ||
| Positive | 126 | 93 |
| Negative | 9 | 7 |
| Her 2 receptor status | ||
| Positive | 12 | 9 |
| Negative | 123 | 91 |
| Tumour Grade | ||
| Grade 1 | 27 | 20 |
| Grade 2 | 73 | 54 |
| Grade 3 | 35 | 26 |
| Lymphovascular invasion | ||
| Absent | 97 | 72 |
| Present |
38 |
18 |
|
(c)Treatment | ||
| Type of surgery | ||
| Mastectomy | 5 | 4 |
| Breast conserving | 130 | 96 |
| Axillary Staging | ||
| Sentinel node biopsy | 133 | 98 |
| Axillary clearance | 1 | 1 |
| No axillary surgery | 1 | 1 |
| Radiotherapy | ||
| Whole breast only | 97 | 72 |
| Whole breast + sequential boost | ||
| 10.68 Gy/4 f | 25 | 19 |
| 12 Gy/4 f | 1 | 1 |
| 13.35 Gy/5 f | 2 | 2 |
| 16 Gy/8 f | 5 | 3 |
| Chest wall | 5 | 3 |
| Deep Inspiration Breath Hold | ||
| Yes | 21 | 16 |
| No | 114 | 84 |
| Endocrine Therapy | ||
| Yes | 126 | 93 |
| No | 9 | 7 |
| Chemotherapy | ||
| Neo-adjuvant | 11 | 8 |
| Adjuvant | 14 | 10 |
| None |
110 |
82 |
| All women | 135 | 100 |