An analysis of clinical characteristics and patient outcomes in primary mediastinal sarcomas.
This study reviewed the clinical features and outcomes of these cases from the SEER (surveillance, epidemiology and end results) database. METHODS: Primary mediastinal sarcomas, diagnosed from 1988 to 2013 were assembled from the SEER database. The incidence and 10-year cancer-specific survival rates were compared to other primary mediastinal malignancies (thymic carcinomas, germ cell tumors, neurogenic tumors, Hodgkin and non-Hodgkin lymphomas) as well as to non-mediastinal sarcomas. Cox-proportional hazard models were utilized to produce multivariate analyses for factors affecting overall survival among primary mediastinal sarcoma patients. RESULTS: A total of 204 patients were recruited into this cohort. Multivariate analysis showed better overall survival for patients with a younger age at diagnosis, low grade [hazard ratio 0.427 (95% CI: 0.224-0.814; P= 0.010)], posterior mediastinum location [hazard ratio 0.458 (95% CI: 0.268-0.781; P= 0.004)], node negative disease [hazard ratio 0.463 (95% CI: 0.232-0.923; P= 0.029)] and surgical treatment [hazard ratio 0.488 (95% CI: 0.336-0.709; P