Abstract
Background
The aims of this study were to evaluate the feasibility and accuracy of indigocarmine dye-guided sentinel node biopsy and to apply this method to avoid further axillary node dissection in sentinel node negative cases.
Methods
Sixty consecutive clinically node-negative breast cancer patients underwent sentinel node biopsy using 0.5% indigocarmine followed by standard axillary node dissection. Sentinel node biopsy was then applied to 42 clinically node-negative patients to avoid axillary node dissection with intraoperative diagnosis made by frozen section.
Results
Validation study: Sentinel nodes were successfully detected in all 60 patients. The mean number of harvested nodes was 1.7 (range 1-3). Sentinel nodes were positive in all 20 axillary node-positive patients, and therefore the false negative rate was 0% (0/20). Only sentinel nodes contained metastases in 55% (11/20) of node positive patients. Observational study: Sentinel nodes were successfully detected in all 42 patients. The mean number of harvested nodes was 1.6 (range 1-3). Sentinel nodes were positive in 12 patients by final histology, and there was one false negative case by frozen section (8%, 1/12). Only sentinel nodes contained metastases in 55% (6/11) of node positive patients. The detection rate, mean number of harvested sentinel nodes and proportion of node positive patients were similar between the validation and observational studies.
Conclusions
Indigocarmine dye-guided sentinel node biopsy was feasible and accurate. This method can be applied to observational studies after successful validation.
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Reprint requests to Tomohiko Aihara, Department of Surgery, Kansai Rosai Hospital, 3-1-69, Inabaso, Amagasaki, Hyogo 660-8511, Japan.
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Aihara, T., Takatsuka, Y. Dye-Guided Sentinel Node Biopsy Revisited; Validation and Observational Study from a Single Institute. Breast Cancer 10, 254–259 (2003). https://doi.org/10.1007/BF02966726
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DOI: https://doi.org/10.1007/BF02966726