Clinical Study
Early Invasive Cancer and Partial Intraoperative Electron Radiation Therapy of the Breast: Experience of the Jules Bordet Institute
Table 1
Characteristics of our patients.
| | Parameters | Characteristics | patients |
| | Mean follow-up (months) | | 23 (7–37) |
| | Age (years) | 40–49 | 18 (9%) | | 50–60 | 75 (37.5%) | | ≥60 | 107 (53.5%) |
| | Side | Left | 104 (52%) | | Right | 92 (46%) | | Bilateral | 4 (2%) |
| | Localisation | UOQ | 72 (35.3%) | | UIQ | 26 (12.8%) | | LEQ | 18 (8.8%) | | LIQ | 10 (4.9%) | | Upp jct | 29 (14.2%) | | Ext jct | 9 (4.4%) | | Int jct | 8 (3.9%) | | Inf jct | 25 (12.3%) | | Central | 7 (3.4%) |
| | Histology | Ductal | 192 (94.1%) | | Mucinous | 4 (2%) | | Tubular | 1 (0.5%) | | Mixed | 1 (0.5%) | | Lobular | 6 (2.9%) |
| | Size AP (mm) | ≤5 pT1a | 6 (3%) | | 6–10 pT1b | 75 (36.8%) | | 11–20 pT1c | 118 (57.8%) | | ≥21 pT2 | 5 (2.4%) |
| | Margins | Negative | 202 | | Positive (invasive) | 1 | | Positive (in situ) | 1 | | Negative after reexcision | 204 (100%) | | Vascular emb | 10 (4.9%) |
| | Grade | I | 88 (43.1%) | | II | 85 (41.7%) | | III | 31 (15.2%) |
| | Molecular subtype | Luminal A | 150 (73.5%) | | Luminal B | 31 (15.2%) | | HER2/neu+ | 13 (6.4%) | | Triple negative | 9 (4.4%) | | Not useful | 1 (0.5%) |
| | SLN status | pN0 negative | 190 (93.1%) | | pN1mic positive | 8 (3.9%) | | pN1a positive | 6 (3%) |
| | Number of N+ | 0 | 190 (93.1%) | | 1 | 14 (6.9%) |
| | Cancer related events | Local recurrence | 1 (0.49%) | | Regional recurrence | 0 | | Distance recurrence | 0 | | Contralateral cancer | 0 | | Other cancers | 4 (2%) | | Total | 5 (2.5%) | | Death from breast cancer | 0 | | Death from other cancers | 2 (1%) | | Death from other causes | 0 | | Total | 2 (1%) |
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