Groin lymph node detection and sentinel lymph node biopsy in vulvar cancer

Area of Science:

• Gynecologic Oncology
• Surgical Oncology
• Diagnostic Imaging

Background:

• Vulvar cancer management requires accurate staging of inguinal lymph node metastasis.
• Sentinel lymph node (SLN) biopsy is a minimally invasive staging technique.
• Magnetic resonance imaging (MRI) may aid in assessing lymph node involvement.

Purpose of the Study:

• To evaluate the efficacy of SLN biopsy for detecting inguinal lymph node metastasis in vulvar cancer.
• To identify diagnostic tools for vulvar cancer staging.
• To assess the role of MRI in predicting lymph node metastasis.

Main Methods:

• Retrospective analysis of data from 41 patients with vulvar cancer.
• Evaluation of MRI measurements, SLN biopsy results, and lymph node metastasis.
• Analysis of prognosis in relation to diagnostic findings.

Main Results:

• SLN biopsy was performed in 12 patients; groin lymphadenectomy was avoided in 5/9 SLN-negative patients.
• MRI measurements (long axis >10.0 mm) showed significant differences between metastasis-positive and negative nodes (p<0.05).
• MRI criteria achieved 87.5% sensitivity and 70.6% specificity for metastasis detection, predicting advanced stage and poorer prognosis.

Conclusions:

• Preoperative MRI combined with SLN biopsy is a feasible strategy for vulvar cancer staging.
• Minimally invasive surgery can be safely employed following this diagnostic approach.
• This approach facilitates accurate staging and potentially reduces surgical morbidity.