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Factors predicting recurrence in thymic epithelial neoplasms.

Aroub Alkaaki1, Ali Abo Al-Saud1, Élise Di Lena1

  • 1Division of Thoracic and Upper Gastrointestinal Surgery, McGill University, Montreal, QC, Canada.

European Journal of Cardio-Thoracic Surgery : Official Journal of the European Association for Cardio-Thoracic Surgery
|April 26, 2022
PubMed
Summary

Complete resection of thymic epithelial neoplasms (TENs) is crucial for survival. Incomplete resection, high-risk histology, and lymphovascular invasion are key factors predicting recurrence in these rare thoracic malignancies.

Keywords:
AdultMasaoka classificationPrognosisRecurrenceThymic cancerThymic neoplasmsThymomaTreatment outcomeWorld Health Organization classification

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Area of Science:

  • Thoracic oncology
  • Surgical pathology
  • Rare tumors

Background:

  • Thymic epithelial neoplasms (TENs) are rare thoracic malignancies with diverse clinical and pathological features.
  • Understanding prognostic factors and recurrence patterns is essential for optimizing patient management.

Purpose of the Study:

  • To analyze the clinicopathological characteristics, survival outcomes, and recurrence patterns of patients with TENs undergoing surgical resection.
  • To identify risk factors associated with recurrence in TENs.

Main Methods:

  • Retrospective review of adult patients with TEN who underwent resection between 2006 and 2019.
  • Kaplan-Meier method for survival analysis and Cox proportional hazards model for multivariable analysis of risk factors.

Main Results:

  • A total of 100 patients were analyzed, with thymoma being the most common histology (92%). Complete resection (R0) was achieved in 91 patients.
  • The 10-year overall and disease-free survival rates were 86.6% and 83.9%, respectively.
  • Risk factors for recurrence included incomplete resection (R1/2), specific TEN subtypes, and lymphovascular invasion.

Conclusions:

  • Complete resection is critical for favorable outcomes in TENs.
  • High-risk histology and lymphovascular invasion necessitate effective adjuvant therapies.
  • Collaborative research is vital due to the rarity of these thoracic malignancies.