Relapsing pediatric non-rhabdomyosarcoma soft tissue sarcomas: The impact of routine imaging surveillance on early detection and post-relapse survival

•The chances of being cured for NRSTS patients who relapse are limited.•The study investigates the role of surveillance imaging in detection of recurrence.•The value of off therapy routine scanning of primary site seems limited.•Surveillance may have an impact on survival in case of lung metastatic relapse.