Clinical Report: Identifying Risk Factors Associated with Mastectomy Conversion

Overview

This study identifies key risk factors for conversion to mastectomy due to positive margins in early breast cancer patients undergoing breast-conserving surgery. Significant predictors include low BMI, multifocality, larger tumor size, and the presence of a DCIS component.

Background

Breast-conserving surgery (BCS) is a common treatment for early breast cancer, aiming to achieve tumor-free margins to minimize recurrence risk. However, a notable percentage of patients experience conversion to mastectomy due to positive margins, which can lead to poorer cosmetic outcomes and increased healthcare costs. Understanding the risk factors for this conversion is crucial for improving surgical planning and patient outcomes.

Data Highlights

Key Findings

• Among 290 patients, 31 underwent conversion to mastectomy (CMT).
• Five parameters were significantly associated with CMT in univariable analysis.
• Low BMI, multifocality, larger tumor size, and DCIS component were identified as robust predictors in multivariable analysis.
• The study emphasizes the importance of preoperative identification of these risk factors.
• Conversion to mastectomy can lead to increased complication rates and healthcare burden.

Clinical Implications

Identifying patients at high risk for conversion to mastectomy allows for better preoperative planning and patient counseling. Surgeons may consider these risk factors when determining surgical approaches and discussing potential outcomes with patients.

Conclusion

The findings highlight the need for careful assessment of specific risk factors in early breast cancer patients undergoing BCS to optimize surgical outcomes and minimize the likelihood of conversion to mastectomy.

Related Resources & Content

1. George Somlo, MD, FACP, The ASCO Post, 2015 -- Expert Point of View
2. The ASCO Post, 2014 -- Margin Reassessment in Breast-Conservation Therapy
3. The ASCO Post, 2024 -- High Reoperation Rates Following Breast-Conserving Surgery
4. Updates in Surgery, 2025 -- Comparative Outcomes of Different Incision Techniques
5. Resource Guide on Breast Conserving Surgery, 2026
6. Clinicopathological Factors Affecting Positive Margins, 2025
7. Diagnostic accuracy of intraoperative methods for margin assessment, 2024
8. Resource Guide on Breast Conserving Surgery
9. Clinicopathological Factors Affecting Positive Margins after Breast-Conserving Surgery: A Comparative Study of Low- and High-Volume Hospitals | Breast Care | Karger Publishers
10. Diagnostic accuracy of intraoperative methods for margin assessment in breast cancer surgery: A systematic review & meta-analysis - ScienceDirect