Whole Lung Irradiation for Completely Responding Pulmonary Metastases in Pediatric Ewing Sarcoma
Hagar Elghazawy, Azza Nasr, Iman Zaky, Manal Zamzam, Ahmed Elgammal, Nesma Farid, Mohamed S. Zaghloul
Abstract
Aim: Scarce data assessing the real value of whole lung irradiation (WLI) in Ewing’s sarcoma (ES) with lung-only metastasis, with published conflicting results. We studied the impact of WLI in a homogenous pediatric population. Materials & methods: Retrospective study evaluating the survival outcomes of WLI in these patients. Results: Out of 163 metastatic ES; 41 patients were eligible for WLI. 30 patients (73.1%) received WLI (+ve) while 11 patients (26.8%) did not receive WLI (-ve). Five-year event-free survival was statistically significant in WLI (+ve). Five-year pulmonary relapse-free survival showed trend for improvement with WLI (+ve), while 5-year overall survival was not statistically significant between the two arms. Conclusion: WLI added significantly to the long term clinical outcome of metastatic ES patients, with no irreversible toxicity.