Intraoperative radiotherapy in the local control of chest wall Ewing sarcoma

S Monje Fuente1, A Del Cañizo López1, J Ordóñez Pereira1

  • 1Pediatric Surgery Department. Hospital Infantil Universitario Gregorio Marañón. Madrid (Spain).

Insights

Intraoperative radiotherapy combined with surgery offers excellent local control for chest wall Ewing sarcoma in pediatric patients. This approach achieved 100% local disease control and high survival rates in a recent study.

Area of Science:

  • Pediatric Oncology
  • Surgical Oncology
  • Radiation Oncology

Background:

  • Ewing sarcoma is a rare pediatric malignancy requiring multidisciplinary management.
  • The specific role of intraoperative radiotherapy (IORT) in chest wall Ewing sarcoma treatment remains under investigation.

Purpose of the Study:

  • To evaluate the efficacy and safety of intraoperative radiotherapy in pediatric patients with chest wall Ewing sarcoma undergoing surgical resection and reconstruction.

Main Methods:

  • A retrospective study included 8 pediatric patients (up to 16 years) treated between 2011-2024.
  • Data collected included patient demographics, treatment details (neoadjuvant therapy, resection, IORT, reconstruction), complications, and outcomes (local control, survival).

Main Results:

  • Complete tumor resection (R0) was achieved in all patients.
  • 100% local disease control and an 87.5% overall survival rate were observed at a mean follow-up of 6 years.
  • Reconstruction using flexible patches, titanium plates, or muscle flaps was successful, with no flap loss.

Conclusions:

  • Intraoperative radiotherapy is a viable treatment option for achieving local control in pediatric chest wall Ewing sarcoma, particularly when large surgical resections are necessary.
  • The study highlights the potential of IORT to improve outcomes for this rare cancer.
Abstract