Radiotherapy and breast reconstruction: a meta-analysis

Area of Science:

• Oncology
• Plastic Surgery
• Radiotherapy

Background:

• The optimal timing and technique for breast reconstruction (BR) in patients undergoing postmastectomy radiation therapy (PMRT) remain debated.
• PMRT is often necessary to reduce cancer recurrence but can negatively impact reconstruction outcomes.

Purpose of the Study:

• To evaluate postoperative morbidity associated with immediate versus delayed breast reconstruction in patients receiving PMRT.
• To compare morbidity between autologous and implant-based reconstruction techniques when PMRT is administered after BR.

Main Methods:

• A systematic literature search was conducted across MEDLINE and EMBASE databases.
• Eleven studies encompassing 1,105 patients were analyzed, focusing on morbidity as the primary outcome.
• Meta-analysis was used to calculate odds ratios (OR) and confidence intervals (CI) for various comparisons.

Main Results:

• Patients receiving PMRT alongside BR experienced significantly higher morbidity (OR = 4.2; 95% CI, 2.4-7.2).
• Autologous reconstruction demonstrated lower morbidity compared to implant-based reconstruction when PMRT followed BR (OR = 0.21; 95% CI, 0.1-0.4).
• Delaying BR until after PMRT showed no significant difference in outcome (OR = 0.87; 95% CI, 0.47-1.62).

Conclusions:

• PMRT adversely affects breast reconstruction outcomes.
• Autologous reconstruction is preferable to implant-based methods in patients requiring PMRT, particularly when performed immediately.
• Reconstruction timing (immediate vs. delayed) did not significantly alter morbidity in the context of PMRT.