Primary Pericardial Mesothelioma: A Population-Based Propensity Score-Matched Analysis

Area of Science:

• Oncology
• Epidemiology
• Cancer Research

Background:

• Primary pericardial mesothelioma is an exceptionally rare malignancy originating from the pericardium's mesothelial lining.
• Understanding its clinical characteristics and survival is crucial for improving patient outcomes.

Purpose of the Study:

• To evaluate the clinical features and survival prognosis of primary pericardial mesothelioma patients.
• To compare outcomes with primary pleural mesothelioma using a population-based cancer registry.

Main Methods:

• Utilized the Surveillance, Epidemiology, and End Results (SEER) program database (1973-2015).
• Included primary pericardial mesothelioma cases and matched them with primary pleural mesothelioma controls using propensity-score matching.
• Employed Kaplan-Meier analysis and log-rank tests for survival comparisons.

Main Results:

• Identified 41 primary pericardial mesothelioma and 15,970 primary pleural mesothelioma cases.
• Pericardial mesothelioma patients were younger, more often female, and nonwhite compared to pleural cases pre-matching.
• Post-matching, pericardial mesothelioma patients had significantly worse overall survival (median 2 months vs. 10 months) and received chemotherapy less frequently.

Conclusions:

• Primary pericardial mesothelioma presents with poorer survival outcomes than pleural mesothelioma.
• Patients diagnosed with this rare condition benefit from care at experienced multidisciplinary tertiary care centers specializing in mesothelioma.