Outcome of Scapular Ewing Sarcoma

Abstract

Background/Aim: Ewing sarcoma is a common primary bone tumor, often located in the distal femur or pelvis. Although the scapula is a flat bone similar to the pelvis, scapular Ewing sarcoma is rare. The aim of this study was to review our institution’s experience with the management of scapular Ewing sarcomas. Patients and Methods: We reviewed 9 patients with an Ewing sarcoma of the scapula, which included 5 males and 4 females with a mean age of 19±6 years. All patients were treated with chemotherapy and local control. Local control included surgical resection (n=7) and definitive radiotherapy (n=2). Mean follow-up was 6 years. Results: Prior to induction chemotherapy, the mean tumor size and volume were 10±2 cm and 181±112 cm³, respectively. Following induction chemotherapy, there was a reduction in the mean tumor size (6±3, p=0.02) and volume (20±12 cm³, p<0.01). The mean tumor necrosis in patients undergoing resection was 72±23%. The median survival was 30-months, and the 5-year disease specific survival was 38%. At most recent follow-up, the mean Musculoskeletal Tumor Society Score was 79±14%. Conclusion: Scapular Ewing sarcoma is a rare, aggressive tumor. Even with chemotherapy and local control with surgery or definitive radiotherapy, patient survival is poor.