Controversies in Sentinel Lymph Node Biopsy for Gynecologic Malignancies

Area of Science:

• Gynecologic Oncology
• Minimally Invasive Surgery
• Cancer Staging

Background:

• Sentinel lymph node (SLN) biopsy is an evolving minimally invasive surgical technique for gynecologic cancers.
• Studies confirm its accuracy in detecting lymph node metastases for endometrial and cervical cancers.
• Emerging adoption of SLN biopsy has raised questions regarding its application and impact.

Purpose of the Study:

• To conduct a scoping review identifying key controversies in SLN biopsy for endometrial and cervical cancers.
• To explore the accuracy, cost-effectiveness, clinical significance of low-volume metastases, morbidity, and survival impact of SLN biopsy.

Main Methods:

• Searched PubMed, Cochrane Library, and NCCN guidelines for evidence.
• Included search terms related to SLN biopsy accuracy, cost-effectiveness, metastasis, morbidity, and survival.
• Selected studies based on significant patient numbers, Level I evidence, prospective trials, or seminal observational series.

Main Results:

• SLN biopsy demonstrates adequate accuracy for staging high-grade endometrial and cervical cancers.
• It appears to be a cost-effective strategy for invasive endometrial cancer.
• Conclusive evidence is lacking on oncologic outcomes, patient morbidity, and adjuvant therapy for isolated tumor cells.

Conclusions:

• SLN biopsy is an accepted staging strategy for cervical and endometrial cancer surgery.
• Controversies persist regarding the safest and most effective application of SLN biopsy.
• Further clinical trials and larger patient series are necessary to resolve these issues.