Table 2.

Re-excision, surgical margin, and oncoplastic surgery status

	Preoperative boost [n = 89]	Contemporary Canadian hypofractionation patients [n = 89]
Initial margin status
Positive	6 (6.7)	10 (11.2)
Close	19 (21.3)	22 (24.7)
Negative	64 (71.9)	57 (64.0)
Final margin status
Positive	4 (4.5)	2 (2.2)
Close	18 (20.2)	20 (22.5)
Negative	67 (75.3)	67 (75.3)
Re-excision
Yes	3 (3.4)	12 (13.5)
No	86 (96.6)	77 (86.5)
Oncoplastic
Yes	24 (27.0)	25 (28.1)
No	65 (73.0)	64 (71.9)
Cavity shave margins
Yes	42 (47.2)	67 (75.3)
No	45 (50.6)	22 (24.7)
No record	2 (2.2)
Intraoperative radiography
Yes	81 (91.0)	88 (98.9)
No	6 (6.7)	1 (1.1)
No record	2 (2.2)

Data are expressed as n (%)

Initial margin margin status after initial lumpectomy, final margin margin status at the time of radiotherapy (after any additional re-excisions if applicable), close ≤ 2 mm