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Related Experiment Video

Updated: Jun 13, 2026

Systematic Endobronchial Ultrasound - The Six Landmarks Approach
05:22

Systematic Endobronchial Ultrasound - The Six Landmarks Approach

Published on: August 11, 2023

Challenging uniform size criteria for EBUS-TBNA sampling: Comparative analysis by lymph node station.

Zachary B Strumpf1, Sanjay Balijepalli2, Pavel Galchenko2

  • 1Division of Pulmonary, Critical Care and Sleep Medicine, University Hospitals Cleveland Medical Center, 11100 Euclid Ave, Cleveland, OH, 44106, USA; School of Medicine, Case Western Reserve University, 10900 Euclid Ave, Cleveland, OH, 44106, USA.

Respiratory Medicine
|June 11, 2026
PubMed
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Uniform lymph node (LN) size criteria for endobronchial ultrasound-guided transbronchial needle aspiration (EBUS-TBNA) in non-small cell lung cancer (NSCLC) staging may not be optimal. Further research is needed to refine these criteria for better mediastinal staging.

Area of Science:

  • Pulmonology
  • Oncology
  • Medical Imaging

Background:

  • Endobronchial ultrasound-guided transbronchial needle aspiration (EBUS-TBNA) is crucial for mediastinal staging in non-small cell lung cancer (NSCLC).
  • Current guidelines lack validated, uniform lymph node (LN) size criteria for EBUS-TBNA sampling across all mediastinal stations.

Purpose of the Study:

  • To evaluate the validity of uniform lymph node (LN) size criteria for EBUS-TBNA in mediastinal staging of NSCLC.
  • To assess variations in lymph node sizes across different mediastinal stations (4R, 4L, 7) in NSCLC patients.

Main Methods:

  • Retrospective analysis of consecutive NSCLC patients undergoing EBUS-TBNA with PET-CT.
  • Nonparametric statistical tests were used to compare lymph node sizes across mediastinal stations.
Keywords:
EBUS, TBNAInterventional pulmonaryLung cancer

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Last Updated: Jun 13, 2026

Systematic Endobronchial Ultrasound - The Six Landmarks Approach
05:22

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Published on: August 11, 2023

Use of Electromagnetic Navigational Transthoracic Needle Aspiration (E-TTNA) for Sampling of Lung Nodules
06:03

Use of Electromagnetic Navigational Transthoracic Needle Aspiration (E-TTNA) for Sampling of Lung Nodules

Published on: May 23, 2015

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Main Results:

  • A total of 1,306 lymph nodes from 205 patients were analyzed.
  • Significant size variations were found in benign lymph nodes across stations (p < 0.001), especially between stations 4R/4L and 7.
  • Malignant lymph nodes did not show significant size differences across stations (p = 0.065).

Conclusions:

  • Uniform lymph node size cutoffs for EBUS-TBNA may not be universally applicable across all mediastinal stations.
  • Prospective, multicenter studies are necessary to establish evidence-based criteria for optimizing EBUS-guided mediastinal staging in NSCLC.