Age-Related Prognostic Factors and Survival Outcomes in Ewing Sarcoma: A Single-Center Experience
1Department of Orthopedics and Traumatology, Baltalimani Bone Diseases Training and Research Hospital, İstanbul, Türkiye
2Department of Orthopedics and Traumatology, University of Health Sciences, Hamidiye Faculty of Medicine, İstanbul, Türkiye
3Department of Pathology, Prof. Dr. Cemil Taşçıoğlu City Hospital, İstanbul, Türkiye
Eur Arch Med Res 2026; 42(1): 93-101 DOI: 10.14744/eamr.2025.06926
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Abstract

Objective: To evaluate age-related prognostic differences in Ewing sarcoma (ES) patients and identify clinical factors influencing outcomes in a tertiary care setting.
Materials and
Methods: Seventy-six patients with ES (ages 1–78) treated between 2010 and 2024 were reviewed retrospectively. Clinical features and treatments were compared across four age groups (0–9, 10–17, 18–25, and ≥25 years). Overall survival (OS) and disease-free survival (DFS) were estimated using Kaplan–Meier curves and compared with log-rank tests.

Results: There were no statistically significant differences in 10-year OS or DFS between age groups (p>0.05), although patients ≥18 years showed a trend toward worse survival. The presence of metastases at diagnosis was associated with markedly lower survival (5-year OS 20–30% vs. 70% for localized disease). Patients who underwent surgical resection of the primary tumor had significantly better survival than those managed without surgery, while limb-salvage versus amputation showed no difference in outcomes. Relapse was associated with poor prognosis.

Conclusion: Adult ES patients tend to have poorer outcomes than children, though age alone was not a significant predictor in this series. Achieving effective local control with surgery and addressing metastatic disease remain critical to improving survival.