Proposed model to facilitate the surgical localization of the sentinel lymph node in gynecological tumors.

OBJECTIVE

To propose a model to facilitate the surgical localization and excision of the sentinel lymph node in gynecological tumors.

METHODOLOGY: This was an observational, cross-sectional, retrospective, and descriptive study incorporating data from patients who underwent sentinel lymph node biopsy for gynecological tumors between May 2020 and August 2025.

RESULTS

The assumptions of linearity, normality, independence, and homoscedasticity of residuals were verified. Subsequently, a simple linear regression analysis model was performed, yielding a predictive equation for surgical count rates: Y = 26.918 + 0.056 × SPECT/CT Counts (R2 = 0.925). This equation demonstrated applicability in a small sample of patients.

CONCLUSIONS

The SPECT/CT counts helps estimate the surgical count rate using a predictive equation. However, studies with larger sample sizes are needed to obtain a more precise equation with greater clinical applicability.