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[The TNM classification. Critical review]

C Appere de Vecchi1, J M Brechot, B Lebeau

  • 1Clinique de Pneumologie, Hôtel-Dieu, Paris.

Revue Des Maladies Respiratoires
|August 5, 1998
PubMed
Summary
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The TNM classification for lung cancer has evolved, with recent updates addressing controversies in staging, particularly concerning T3/T4 tumors and lymph node involvement. These revisions aim to improve the accuracy of lung cancer prognostication and treatment strategies.

Area of Science:

  • Oncology
  • Thoracic Surgery
  • Medical Imaging

Context:

  • The TNM classification is a critical tool for staging lung cancer, impacting treatment decisions and prognosis.
  • Established international guidelines for TNM staging have been in place since 1986, with significant revisions in 1996.
  • Ongoing discussions and literature reviews highlight areas of controversy within the TNM system.

Purpose:

  • To review the evolution of the TNM classification for bronchopulmonary cancer.
  • To detail the features of the newly defined TNM classification, focusing on T and N staging.
  • To discuss controversies and recent revisions concerning TNM staging in lung cancer.

Summary:

  • The TNM classification for lung cancer, in use since 1996, has undergone revisions to address specific challenges.

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  • Key areas of revision include definitions of T3/T4 tumors, pleural effusions, and lymph node (N2, N3) involvement.
  • Controversies persist regarding stage grouping, resectability of certain tumors, and the heterogeneity of N2 disease prognosis.

    • Impact:

    • The revised TNM classification aims to provide a more accurate prognostic framework for lung cancer patients.
    • Addressing staging ambiguities can lead to more standardized treatment approaches.
    • Further research and discussion on TNM classification are crucial for refining lung cancer management.