Related Experiment Video
Updated: May 22, 2026
07:13
Comparison of Predictive Performance of Three Lymph Node Staging Systems in Colorectal Signet Ring Cell Carcinoma Based on Machine Learning Model
Published on: April 18, 2025
Primary retroperitoneal lymph node dissection for clinical stage II seminoma: Comparative analysis against
1Naval Medical Center San Diego San Diego California USA.
BJUI Compass
|May 21, 2026
Summary
Primary retroperitoneal lymph node dissection (pRPLND) for clinical stage II (CSII) seminoma shows comparable overall survival to other treatments. Salvage chemotherapy rates increase with disease extent in CSII seminoma patients.
Area of Science:
- Oncology
- Surgical Oncology
- Urologic Oncology
Background:
- Clinical stage II (CSII) seminoma requires effective treatment strategies.
- Primary retroperitoneal lymph node dissection (pRPLND) is a surgical option for CSII seminoma.
- Comparative outcome data for pRPLND versus other treatments are crucial.
Purpose of the Study:
- To conduct a real-world comparative analysis of outcomes following pRPLND for CSII seminoma.
- To evaluate overall survival (OS) and salvage chemotherapy-free survival (SFS) after pRPLND.
Main Methods:
- Utilized the National Cancer Data Base (2004-2022) for patients with CSII germ cell tumors.
- Employed Cox regression for survival analyses, including sensitivity analysis with energy-balancing weighting.
- Examined OS for CSII seminoma and SFS after pRPLND based on clinical nodal staging (cN1-cN3).
Main Results:
- Overall survival did not significantly differ between pRPLND and chemotherapy or radiation therapy.
- Sensitivity analysis confirmed similar OS findings.
- Estimated 2-year salvage chemotherapy-free survival rates were 70% (cN1), 45% (cN2), and 36% (cN3).
Conclusions:
- pRPLND for CSII seminoma offers comparable overall survival to alternative treatments.
- The likelihood of requiring salvage chemotherapy rises with increasing clinical disease extent in CSII seminoma.
- Retrospective data necessitate consideration of potential unaccounted bias.
