JoVE - Journal of Visualized Experiments
JoVE Visualize
Contact Us

The role of extensive lymph node dissection in the new grading system for lung adenocarcinoma

  • 0Taipei Veterans General Hospital, Division of Thoracic Surgery, Department of Surgery Taipei, Taiwan.
European Journal of Surgical Oncology : the Journal of the European Society of Surgical Oncology and the British Association of Surgical Oncology +

|

August 23, 2024

|

August 23, 2024

View abstract on PubMed

Summary

This summary is machine-generated.

Lung adenocarcinoma survival rates decline with increasing tumor grade. Complete lymphadenectomy (IASLC-R0) improves outcomes for grade 3 tumors, while uncertain resection (R(un)) worsens survival, necessitating closer monitoring.

Area Of Science

  • Oncology
  • Thoracic Surgery
  • Cancer Prognostics

Background

  • Lung adenocarcinoma grading systems are crucial for predicting patient outcomes.
  • The extent of lymphadenectomy (lymph node removal) is a key surgical factor influencing survival.

Purpose Of The Study

  • To evaluate the prognostic significance of the new lung adenocarcinoma grading system.
  • To assess the impact of lymphadenectomy extent (complete vs. uncertain resection) on survival outcomes.

Main Methods

  • Analysis of 1258 lung adenocarcinoma patients undergoing curative resection (2006-2017).
  • Evaluation of overall survival (OS), cancer-specific survival (CSS), and recurrence-free survival (RFS).
  • Stratification by tumor grade (1-3) and lymphadenectomy extent (IASLC-R0 vs. R(un)).

Main Results

  • Survival rates (OS, CSS, RFS) significantly decreased from grade 1 to grade 3.
  • Grade 3 tumors and uncertain lymphadenectomy (R(un)) were independent predictors of poorer survival.
  • Grade 3 patients undergoing complete lymphadenectomy (IASLC-R0) showed significantly better OS and RFS than those with R(un).

Conclusions

  • Lung adenocarcinoma outcomes worsen across tumor grades 1-3.
  • Uncertain lymphadenectomy (R(un)) negatively impacts survival in grade 3 lung adenocarcinoma.
  • Consider intensive monitoring and adjuvant therapy for grade 3 patients with R(un) lymphadenectomy.

Keywords: