Table 4.
Ipsilateral subsequent events and type in patients who underwent breast-conserving surgery (BCS) in England only.
| Ipsilateral events (England only, BCS) | DCIS with microinvasion | DCIS without microinvasion | Total | P value |
|---|---|---|---|---|
| Total | 261 | 6262 | 6523 | |
| Total events | 18 (incl 1 unknown+ | 584 (incl 24 unknown type+) | 602 | 0.18 |
| Recurrence as DCIS | 6 | 211 | 217 | 0.34 |
| Recurrence as Invasive | 11 | 349 | 360 | 0.35 |
| Recurrence as invasive with nodal positivity | 1* | 50 | 51 | 0.46 |
*Micrometastasis (<2 mm).
+Unknown: whether in situ or invasive carcinoma.