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Paediatric high-grade osteosarcoma and its prognostic factors: a 10-year retrospective study
G P Y Tong1, W F Hui2, K C Wong3
1Department of Paediatrics, Queen Elizabeth Hospital, Hong Kong.
Hong Kong Medical Journal = Xianggang Yi Xue Za Zhi
|November 24, 2022
Summary
This study identified key prognostic factors for paediatric high-grade osteosarcoma, finding that metastasis at diagnosis and poor response to chemotherapy significantly impact survival outcomes in young patients.
Area of Science:
- Pediatric Oncology
- Skeletal Oncology
- Cancer Research
Background:
- High-grade osteosarcoma is a rare but aggressive bone cancer primarily affecting children and adolescents.
- Understanding prognostic factors is crucial for improving treatment strategies and patient outcomes.
Purpose of the Study:
- To characterize paediatric high-grade osteosarcoma in Hong Kong.
- To identify prognostic factors influencing survival in this patient population.
Main Methods:
- Retrospective analysis of medical records from 52 paediatric patients diagnosed between 2009 and 2018.
- Evaluation of patient demographics, tumor characteristics, treatment modalities, and survival data.
Main Results:
- Femoral tumors and localized disease at diagnosis were common; lung metastasis was frequent.
- Survival rates were 55.8% for event-free survival and 71.2% for overall survival.
- Metastasis at diagnosis, poor tumor chemonecrosis, and amputation were linked to worse survival.
Conclusions:
- Outcomes in Hong Kong align with international findings.
- Metastatic disease and poor chemonecrosis are critical negative prognostic indicators.
- Future research should explore molecular targets for novel therapies.

