Impact of Non-Axillary Sentinel Node Biopsy on Breast Cancer Treatment
Author Information
Author(s): Tanis P J, Nieweg O E, Valdés Olmos R A, Peterse J L, Rutgers E J Th, Hoefnagel C A, Kroon B B R
Primary Institution: The Netherlands Cancer Institute/Antoni van Leeuwenhoek Hospital
Hypothesis
Can lymphatic drainage to non-axillary sentinel nodes improve staging and treatment strategies for breast cancer patients?
Conclusion
Biopsy of sentinel nodes outside the axilla can lead to more precise staging and changes in treatment for some breast cancer patients.
Supporting Evidence
- 27% of patients had sentinel nodes outside levels I and II of the axilla.
- Metastases were found in 20% of patients who underwent extra-axillary sentinel node excision.
- Staging was improved in 13% of patients with non-axillary sentinel lymph nodes.
- Management was modified in 17% of patients with extra-axillary sentinel nodes.
- Internal mammary chain irradiation was given to 5% of patients based on findings from non-axillary nodes.
Takeaway
Doctors can find important information about breast cancer by checking lymph nodes that aren't in the armpit, which can help them decide how to treat the cancer better.
Methodology
549 breast cancer patients underwent lymphoscintigraphy and sentinel node biopsy to evaluate lymphatic drainage patterns.
Limitations
The study design did not allow for determination of sensitivity due to lack of completion internal mammary lymph node dissection.
Participant Demographics
Mean age of participants was 56 years, with a range from 27 to 91 years.
Statistical Information
P-Value
p=0.042
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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