[Breast-conserving surgery in breast cancer]

Area of Science:

• Oncology
• Surgical Oncology
• Breast Cancer Research

Context:

• Breast-conserving surgery (BCS) is standard for early-stage breast cancer (T < 3 cm).
• Local recurrence remains a challenge in breast cancer treatment.
• Optimizing axillary staging is crucial for BCS effectiveness.

Purpose:

• To evaluate the long-term local recurrence rates following breast-conserving surgery for early-stage breast cancer.
• To assess the impact of the sentinel lymph node (SN) technique on axillary dissection protocols.
• To analyze recurrence data in relation to tumor size and lymph node status.

Summary:

• A study of 1504 breast cancer patients from 1987-2004 included 803 undergoing BCS for T < 3 cm tumors.
• The sentinel lymph node (SN) technique guided axillary dissection, limiting it to SN examination or first-level dissection in node-negative cases.
• Complete axillary dissection was reserved for metastatic SN or second-level node involvement.
• The study reported a 5-year local recurrence rate of 3.5% and a 10-year rate of 6%.

Impact:

• Demonstrates the efficacy of breast-conserving surgery with refined axillary staging for early-stage breast cancer.
• Highlights the role of the sentinel lymph node (SN) technique in minimizing morbidity associated with axillary dissection.
• Provides valuable long-term data on local recurrence, informing clinical practice and patient management strategies.