Clinical features and outcomes in patients with extraskeletal Ewing sarcoma.
Clinical features and outcomes in patients with extraskeletal Ewing sarcoma.
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DOI:
10.1002/cncr.25840
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发表时间:
2011-07-01
期刊:
影响因子:
6.2
通讯作者:
DuBois, Steven G.
中科院分区:
文献类型:
--
作者:
Applebaum, Mark A.;Worch, Jennifer;Matthay, Katherine K.;Goldsby, Robert;Neuhaus, John;West, Daniel C.;DuBois, Steven G.
Ewing sarcoma can arise in either bone or soft tissue locations. We sought to investigate if patient characteristics, treatment strategies, and outcomes differ between skeletal Ewing sarcoma and extraskeletal Ewing sarcoma (EES). Patients < 40 years of age with Ewing sarcoma or peripheral primitive neuroectodermal tumor (PNET) reported to the US SEER database from 1973 to 2007 were evaluated based on skeletal (n=1519) vs. extraskeletal (n=683) site of origin. Patient characteristics were compared using Fisher exact tests. Overall survival was estimated by Kaplan-Meier methods and compared using log-rank tests and Cox models. Patients with EES had a higher mean age (19.5 vs. 16.3 years; p < 0.001) and were less likely to be male (53.4% vs. 63.3%; p < 0.001) or white (84.8% vs. 92.5%; p < 0.001) compared to patients with skeletal tumors. Extraskeletal tumors were more likely to arise in axial locations (72.9% vs. 54.2%; p = 0.001), though less likely to arise specifically in the pelvis (19.8% vs. 26.6%; p < 0.001). Metastatic status or tumor size did not differ by group. Five-year overall survival was superior for localized EES compared to localized skeletal tumors (69.7% vs. 62.6%; p = 0.02). The hazard ratio for death in patients with localized skeletal tumors compared to localized EES was 2.36 (95% CI 1.61-3.44) beyond 24 months from initial diagnosis. Patient characteristics and outcomes differ among patients with EES compared to patients with skeletal Ewing sarcoma. These findings may have important implications for patient care.
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