Clinical Research Directory

Inclusion Criteria: * Patients who experienced LR as first event of recurrence after treatment for localized high-grade osteosarcoma of bone, including cases with synchronous lung metastases * Adequate patient compliance to follow-up visits * Written informed consent prior to any study-specific analysis and/or data collection * No age limits Exclusion Criteria: * Cases of LR demonstrated after \> 3 months after metastatic disease * Impossibility to ensure adequate compliance