La biopsia del ganglio centinela en el tumor de Wilms pediátrico
Topic overview
This study demonstrates that intraoperative sentinel lymph node biopsy is feasible and safe in pediatric Wilms tumor, with radiotracer injection after vascular ligation improving detection accuracy. In 20 patients, the technique identified nodal involvement in 15% with no false negatives, suggesting enhanced staging capability over standard lymph node sampling.
Key takeaways
- Sentinel lymph node biopsy (SLNB) is feasible and safe in pediatric Wilms tumor, with most SLNs located in intercavoaortic space.
- Radiotracer injection after renal vessel ligation reduces background uptake and improves SLN detection accuracy.
- SLNB showed 100% negative predictive value (no false negatives) in this 20-patient cohort, enhancing staging precision.
- 15% of patients had positive sentinel nodes; all cases with positive SLN had additional involved nodes removed during nephrectomy.
- Intraoperative SLNB may improve Wilms tumor staging efficacy compared to standard lymph node sampling alone.
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