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Multiple or sequential oestrogen receptor assays in breast cancer
The Australian and New Zealand Journal of Surgery
|June 1, 1983
Summary
Oestrogen receptor status can change in breast cancer recurrences. Receptor levels were higher in lymph nodes than primary tumors, impacting patient management.
Area of Science:
- Oncology
- Endocrinology
Background:
- Oestrogen receptor (ER) status is crucial for breast cancer prognosis and treatment decisions.
- Understanding ER status in primary tumors, recurrences, and metastases is vital for effective management.
Purpose of the Study:
- To investigate changes in oestrogen receptor status between primary, recurrent, and metastatic breast cancer.
- To compare oestrogen receptor levels in primary tumors versus lymph node metastases.
Main Methods:
- Performed multiple oestrogen receptor assays on primary, locally recurrent, and metastatic breast cancer samples.
- Analyzed data from 62 breast cancer patients.
Main Results:
- A change in oestrogen receptor status was observed in 28% of late recurrences (7 out of 25 patients).
- Oestrogen receptor levels were consistently higher in lymph node samples compared to primary tumors, especially at initial surgery.
Conclusions:
- Oestrogen receptor status can be dynamic, with significant changes occurring in late breast cancer recurrences.
- Differences in oestrogen receptor levels between primary tumors and metastatic sites (e.g., lymph nodes) have critical implications for clinical management strategies.