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  • Title: Current trends in the management of malignant peritoneal mesothelioma.
    Author: Miura JT, Johnston FM, Gamblin TC, Turaga KK.
    Journal: Ann Surg Oncol; 2014 Nov; 21(12):3947-53. PubMed ID: 24841356.
    Abstract:
    BACKGROUND: Historically, malignant peritoneal mesothelioma (MPM) has been considered an aggressive and lethal neoplasm. However, contemporary series have demonstrated improved outcomes following a combination of cytoreductive surgery and intraperitoneal chemotherapy. We sought to assess the trends in management and survival of patients with MPM in the United States. METHODS: The Surveillance, Epidemiology, and End Results database was used to identify all patients diagnosed with malignant peritoneal mesothelioma from 1973 to 2010. Overall survival (OS) was studied with Kaplan-Meier curves and Cox regression analyses. RESULTS: We identified 1,591 patients with MPM. Median age at diagnosis was 64 years (IQR 53-74 years) with the majority of patients presenting with metastatic disease (n = 962, 60.5 %). A total of 980 patients (61.6 %) did not receive surgical therapy. Receipt of radical cytoreduction for patients with metastatic MPM demonstrated a significant improvement in OS compared with patients not receiving surgery (20 vs. 4 months, p < 0.01). A temporal increase was observed in OS for patients receiving surgery (1991-1995: 15 vs. 2006-2010: 38 months, p = 0.1). In multivariate models, limited (HR 0.55; 95 % CI 0.48-0.63; p < 0.01) and radical (HR 0.66; 95 % CI 0.54-0.80; p < 0.01) surgery were independently associated with improved survival. CONCLUSIONS: In the current era, approximately three of every five patients do not receive surgery when diagnosed with MPM, although a significant survival benefit is noted in select patients. The opportunity to improve patient survival with surgical therapy is lost in a significant number of MPM patients.
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