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Patterns of breast cancer relapse
E E Elder1, C W Kennedy, L Gluch
1Department of Breast and Endocrine Surgery, The Strathfield Breast Centre, 4/3 Everton Road, Sydney, NSW 2135, Australia.
Summary
Understanding breast cancer relapse is key. Bone metastasis is the most common site, but local recurrence offers better survival rates. This study offers insights for patient expectations.
Area of Science:
- Oncology
- Breast Cancer Research
- Clinical Outcomes
Background:
- Breast cancer is a leading cause of cancer death in women.
- Comprehensive long-term outcome data, especially on relapse sites, is limited.
- The Strathfield Breast Centre (TSBC) has a 14-year prospective patient data registry.
Purpose of the Study:
- To analyze long-term outcomes of invasive, non-metastatic breast cancer patients.
- To identify the most common sites of cancer relapse.
- To correlate relapse patterns with patient survival and treatment strategies.
Main Methods:
- Prospective study of 2509 women with invasive, non-metastatic breast cancer (1989-2002).
- Regular follow-up with clinical reviews and annual mammography/ultrasound.
- Kaplan-Meier survival analysis of demographics, management, and outcomes.
Main Results:
- 18% of patients experienced relapse (local, nodal, or distant).
- Bone was the most frequent site of first relapse (125 patients), followed by local recurrence (124).
- Local recurrence had a higher 5-year survival (41%) compared to nodal (20%) or distant (13%) recurrence. Bone metastases showed a median survival of 2.4 years.
Conclusions:
- Multidisciplinary care provides valuable treatment outcome data.
- Statistical insights aid in managing patient expectations regarding breast cancer recurrence.
- Understanding relapse patterns, particularly bone metastases, is crucial for prognosis.
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