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Axillary sentinel lymph node examination in breast carcinoma
S W Kelley1, R A Komorowski, A M Dayer
1Department of Pathology, Medical College of Wisconsin, Milwaukee, WI 53226-0509, USA.
Archives of Pathology & Laboratory Medicine
|June 26, 1999
Summary
Pathologic examination methods for breast sentinel nodes significantly impact metastatic disease detection rates. Immunoperoxidase staining identified more positive nodes than routine or step section evaluations.
Area of Science:
- Oncology
- Surgical Pathology
- Breast Cancer Research
Background:
- Sentinel lymph node biopsy is crucial for breast cancer staging.
- Accurate pathological examination of sentinel nodes is essential for treatment decisions.
Purpose of the Study:
- To compare the diagnostic yield of different pathological examination techniques for breast sentinel nodes.
- To determine if frozen section, step sections, or immunoperoxidase staining yield different rates of metastatic disease detection.
Main Methods:
- Evaluation of 28 breast sentinel node biopsy patients from university and private hospitals.
- Sentinel nodes were examined using step-sectioning with immunoperoxidase stains (cytokeratin and epithelial membrane antigen).
- Results were compared against routine examination (intraoperative frozen section and H&E slide).
Main Results:
- Routine evaluation identified 9 positive cases.
- Step sections identified 10 positive cases.
- Immunoperoxidase staining identified 11 positive cases, indicating higher sensitivity.
Conclusions:
- Pathological examination methods for breast sentinel nodes vary in their ability to detect metastatic disease.
- Standardization of techniques is necessary for multi-institutional studies on sentinel node utility.
- Uniform methods are needed to reliably predict axillary node status across institutions.