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Appendicular dedifferentiated chondrosarcoma: A management and survival study from the SEER database
Marcos R Gonzalez1, Mayte Bryce-Alberti1, Arianna Portmann-Baracco1
1Facultad de Medicina Alberto Hurtado, Universidad Peruana Cayetano Heredia, Lima, Peru.
Journal of Bone Oncology
|October 17, 2022
Summary
Dedifferentiated chondrosarcoma (DDC) has a high metastasis rate and poor survival. Larger tumors increase metastasis risk, while female gender offers protection against death. Limb-salvage surgery is common.
Area of Science:
- Orthopedic Oncology
- Skeletal Neoplasms
- Cancer Metastasis
Background:
- Dedifferentiated chondrosarcoma (DDC) is an aggressive bone cancer with a poor prognosis.
- Current treatment strategies include limb-salvage surgery or amputation.
Purpose of the Study:
- To describe demographic, clinical, and treatment characteristics of appendicular DDC.
- To identify risk factors for metastasis and overall death.
- To assess survival rates based on treatment modalities.
Main Methods:
- Analysis of 205 patients from the SEER Database.
- Multivariate regression to determine risk factors.
- Kaplan-Meier method for survival analysis.
Main Results:
- Over 24% of patients presented with metastasis at diagnosis.
- Tumor size >8 cm and discontinuous tumors increased metastasis risk.
- Female gender was a protective factor against death; metastases to non-lung sites significantly increased overall mortality risk.
Conclusions:
- Appendicular DDC exhibits high metastatic rates and low survival.
- Limb-salvage surgery is the predominant treatment.
- Tumor size is a risk factor for metastasis, and female gender is protective against mortality.
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