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Related Experiment Video

Updated: Jun 3, 2025

Sentinel Lymph Node Mapping and Biopsy for Endometrial Cancer at Early Stage with Laparoscopy
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Evaluation of One Step Nucleic Acid Amplification for detection of lymph node metastases compared to

Jan Kostun1, Alessandra Mescalchin2, Martin Pešta3

  • 1Department of Gynaecology and Obstetrics, University Hospital Pilsen, Charles University, Pilsen, Czech Republic.

BMC Women'S Health
|January 8, 2025
PubMed
Summary

This study compares One Step Nucleic Acid Amplification (OSNA) to sentinel lymph node ultrastaging for endometrial cancer diagnosis. OSNA shows potential as a faster, standardized diagnostic alternative.

Keywords:
Endometrial cancerOSNASentinel lymph nodesUltrastaging

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Area of Science:

  • Oncology
  • Surgical Pathology
  • Molecular Diagnostics

Background:

  • Endometrial cancer diagnosis relies on accurate lymph node staging.
  • Sentinel lymph node biopsy is a standard procedure, but ultrastaging can be time-consuming.
  • Novel diagnostic methods are needed to improve efficiency and accuracy.

Purpose of the Study:

  • To evaluate the diagnostic accuracy of One Step Nucleic Acid Amplification (OSNA) in detecting metastatic nodal involvement in endometrial cancer.
  • To compare OSNA's performance against the established sentinel lymph node histopathological ultrastaging.
  • To assess OSNA as a potential modern diagnostic alternative in endometrial cancer management.

Main Methods:

  • A multicentre, prospective European trial involving expert centres in sentinel lymph node mapping.
  • Training provided on the OSNA RD-210 analyser for rapid detection of cytokeratin 19 (CK19) mRNA.
  • Eligible endometrial cancer patients (≥18 years) underwent both OSNA and ultrastaging of sentinel lymph nodes.

Main Results:

  • The study aims to determine the accuracy of OSNA as an index test.
  • Sentinel lymph node histopathological ultrastaging serves as the reference test for comparison.
  • Results will be analyzed to establish OSNA's diagnostic performance.

Conclusions:

  • This European study is poised to be the largest evaluating OSNA in endometrial cancer.
  • OSNA offers potential for standardization and rapid results in nodal staging.
  • The findings could establish OSNA as a valuable diagnostic tool, complementing or replacing current ultrastaging methods.