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Prognostic Differences Among T3 Descriptor Subgroups in Resected Lung Cancer.

Canberk Heskiloğlu1, Necati Citak1, Serkan Yazgan1

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Summary

Prognostic heterogeneity exists in T3 nonsmall cell lung cancer. Patients with multiple T3 descriptors or invasion have significantly worse survival outcomes compared to those with single descriptors.

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Area of Science:

  • Oncology
  • Thoracic Surgery
  • Cancer Research

Background:

  • Nonsmall cell lung cancer (NSCLC) staging is crucial for prognosis.
  • T3 NSCLC exhibits prognostic heterogeneity based on specific tumor characteristics.
  • Understanding these differences is vital for accurate patient stratification and treatment planning.

Purpose of the Study:

  • To investigate survival differences among distinct T3 nonsmall cell lung cancer subgroups.
  • To identify specific T3 descriptors associated with poorer prognoses in resected lung cancer patients.

Main Methods:

  • Retrospective cohort study of 381 patients with pathologically confirmed T3N0/1 NSCLC.
  • Exclusion of patients with mediastinal lymph node metastases or superior sulcus tumors.
  • Classification into T3-ordinary, T3-invasion, and T3-multiple subgroups based on pathological T3 descriptors.

Main Results:

  • The overall 5-year survival rate was 52% (median 63 months).
  • Significant survival differences were observed among subgroups: T3-ordinary (70 months), T3-invasion (58 months), and T3-multiple (43 months).
  • The T3-multiple group had a significantly lower 5-year survival rate (40.4%) compared to the T3 single group (54.5%).
  • Lymph node status, adjuvant treatment, surgical complications, and T3-subgroups were independent prognostic factors.

Conclusions:

  • Patients with multiple T3 descriptors or direct tumor invasion into adjacent structures face the worst survival rates.
  • These findings suggest potential for stage migration discussions in these high-risk T3 NSCLC patients.
  • Subgroup analysis of T3 NSCLC is essential for refining prognostic assessments.