Surgical margin and breast recurrence after breast-conserving therapy

Area of Science:

• Oncology
• Surgical Oncology
• Breast Cancer Research

Background:

• Breast-conserving surgery (BCS) is a standard treatment for early-stage breast cancer.
• Assessing factors influencing local recurrence after BCS is critical for optimizing patient outcomes.
• Microscopic surgical margins are a key area of investigation in BCS efficacy.

Observation:

• This study analyzed 161 patients with clinical stage I and II breast cancer treated with BCS between 1991 and 1997.
• Local recurrence was observed in 5 patients, with a 5-year actuarial local control rate of 96.6%.
• Microscopic margins were negative in 78% and positive in 22% of resected specimens.

Findings:

• A significant association was found between positive microscopic surgical margins and increased local recurrence rates in the conserved breast.
• No significant differences were noted in patient demographics or tumor characteristics between positive and negative margin groups.
• Local control rates were substantially higher in patients with negative surgical margins compared to those with positive margins.

Implications:

• Microscopic surgical margin status is a critical prognostic factor for local recurrence following BCS for early-stage breast cancer.
• The findings underscore the importance of achieving clear surgical margins during BCS to improve local tumor control.
• Future surgical techniques and adjuvant therapies may benefit from considering margin status as a primary determinant.