Atallah 2015.

Study characteristics
Methods	Retrospective single‐centre cohort study Hotel‐Diey de France, Beirut, France 2005‐2013 280 participants
Participants	Inclusion: women with early breast cancer who underwent breast conserving surgery
Interventions	Intervention: volume displacement ‐ OPS stage 1 and 2, (n = 193) Control: wide local excision, (n = 87)
Outcomes	Primary outcomes: Local recurrence (no follow‐up time therefore excluded from analysis) Secondary outcomes: Re‐excisions Other outcomes: Margins
Notes	Conference abstract No disclosures/funding declared