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Three Decades of Malignant Pleural Mesothelioma: An Academic Center Experience

Published:March 26, 2021DOI:https://doi.org/10.1016/j.cllc.2021.03.011

      Abstract

      Background

      Malignant pleural mesothelioma (MPM) remains a challenging disease to manage. In the past few decades, extrapleural pneumonectomy (EPP), pemetrexed-based chemotherapy, and indwelling pleural catheters were introduced to MPM care with variable levels of efficacy and evidence.

      Patients and Methods

      This was a retrospective review of patients diagnosed with MPM between January 1991 and March 2019. The primary outcome was overall survival (OS). Data were examined by decade to assess trends in MPM demographics, management, and OS. A subgroup analysis was then conducted to examine the impact of EPP, pemetrexed, and indwelling pleural catheters on OS.

      Results

      The study included 337 patients; 309 patients had died at last follow-up (91.7%). Median age at diagnosis and the proportion of female patients increased from 65.8 years (interquartile range [IQR], 57.1-73.7) and 11.6% female from 1991 to 1999 to 75 years (IQR, 68.1-80.6) and 20.5% female from 2010 to 2019. Median OS was largely unchanged in the three study periods: 9.0 months (95% confidence interval [CI], 6.9-12.7) in the 1991-1999 cohort, 9.3 months (95% CI, 7.6-13.2) in the 2000-2009 cohort, and 10.1 months (95% CI, 7.9-13.6) in the 2010-2019 cohort. Controlling for a number of demographic and prognostic factors, EPP (hazard ratio [HR] = 0.50; 95% CI, 0.3-0.9; P = .02), pemetrexed-based chemotherapy (HR = 0.59; 95% CI, 0.40-0.87; P = .007), and indwelling pleural catheters (HR = 0.3; 95% CI, 0.13-0.71; P = .006) were each associated with improvements in OS.

      Conclusion

      Despite the small incremental improvements in survival shown by the three interventions we examined, prognosis remains guarded for MPM patients. Better modalities of management are needed.

      Keywords

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