Prognosis after Local Recurrence in Patients with Early-Stage Breast Cancer Treated without Chemotherapy

Area of Science:

• Oncology
• Breast Cancer Research
• Cancer Recurrence

Background:

• Many early-stage breast cancer patients have low recurrence risk and may avoid chemotherapy.
• Local recurrence in these low-risk women significantly elevates the risk of death.
• The effectiveness of chemotherapy initiated at the time of local recurrence requires further investigation.

Purpose of the Study:

• To identify predictors of death following local recurrence in early-stage breast cancer patients who did not receive initial chemotherapy.
• To analyze factors influencing outcomes in a hospital-based cohort experiencing local breast cancer recurrence.

Main Methods:

• A cohort of 135 node-negative, <5 cm early-stage breast cancer patients diagnosed between 1987-2000 who did not receive chemotherapy were identified.
• Data on initial tumor characteristics, recurrence timing, and treatment were abstracted.
• Kaplan-Meier and Cox proportional hazards models were used to assess survival and identify predictive factors for death post-recurrence.

Main Results:

• The mean time to local recurrence was 7.8 years.
• 28.1% of patients died of breast cancer post-local recurrence, with 10-year survival at 71% and 15-year survival at 65%.
• Predictors of death included progesterone receptor (PR)-negative status, age under 40 at diagnosis, and recurrence within 2 years.

Conclusions:

• A substantial risk of death exists for breast cancer patients with low initial mortality risk who experience isolated local recurrence.
• Systemic treatment strategies at the time of local recurrence warrant further research.