Researchers have identified detectable metastases at diagnosis to be the most important adverse prognostic factor in Ewing's sarcoma . The median age at diagnosis was 14 years, and the median follow-up was 6.6 years. Site, age group, and period of diagnosis were found to have significant influence on relapse-free survival among patients with no metastases at diagnosis.
Patients have fared better in recent years, the authors note.
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