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Prognostic factors in osteosarcoma: a critical review
A M Davis1, R S Bell, P J Goodwin
1University of Musculoskeletal Oncology Unit, Mount Sinai Hospital, Toronto, Canada.
Summary
Tumor necrosis after chemotherapy is a key indicator of survival for extremity osteosarcoma. Pre-treatment factors lack consensus for predicting patient outcomes in high-grade osteosarcoma.
Area of Science:
- Orthopedic Oncology
- Cancer Prognostics
- Chemotherapy Efficacy
Background:
- High-grade osteosarcoma of the extremities is a challenging diagnosis.
- Identifying prognostic factors is crucial for patient management and treatment planning.
- Previous studies have explored various clinical and pathological variables.
Purpose of the Study:
- To critically appraise prognostic factors influencing survival in nonmetastatic, high-grade extremity osteosarcoma.
- To identify reliable predictors of patient outcomes in this specific cancer subtype.
Main Methods:
- Comprehensive literature search of reports published between January 1973 and March 1992.
- Inclusion and scoring of eligible reports were performed blindly by two authors based on predefined criteria.
- Evaluation of prognostic variables including age, sex, tumor location, tumor size, and tumor necrosis.
Main Results:
- Eight studies met the inclusion criteria for the appraisal.
- Univariate analysis identified tumor size and post-chemotherapy tumor necrosis as significant prognostic variables.
- Multivariate analysis confirmed tumor necrosis as the sole significant independent prognostic factor for survival.
Conclusions:
- Tumor necrosis following preoperative chemotherapy is the most critical prognostic indicator for extremity osteosarcoma survival.
- Currently, no consensus exists on pre-therapy prognostic variables for patient stratification.
- Further research may be needed to establish reliable pre-treatment prognostic markers.