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Multivariate analysis of prognostic factors in synovial sarcoma
Kyoung Hwan Koh1, Eun Yoon Cho, Dong Wook Kim
1Department of Orthopedic Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
Orthopedics
|November 12, 2009
Summary
Histologic subtype is the most crucial prognostic factor for synovial sarcoma, impacting survival irrespective of tumor stage. Monophasic subtypes and metastasis at presentation are linked to poorer outcomes.
Area of Science:
- Orthopedic Oncology
- Surgical Pathology
Background:
- Synovial sarcoma exhibits diverse biological and clinical features, necessitating identification of prognostic factors due to unpredictable behavior.
- Previous studies on prognostic factors for synovial sarcoma have yielded inconsistent results, except for tumor size.
Purpose of the Study:
- To identify independent risk factors for overall and progression-free survival in synovial sarcoma patients.
- To determine the most significant prognostic indicators for synovial sarcoma through survival analysis.
Main Methods:
- Prospective follow-up of 41 consecutive synovial sarcoma patients from January 1997 to March 2008.
- Analysis of overall and progression-free survival based on various clinical and pathological factors.
- Multivariate Cox proportional hazard regression analysis to identify independent prognostic factors.
Main Results:
- Tumor size (>5 cm), non-limb-based location, metastasis at presentation, and monophasic subtype were associated with poorer overall survival.
- Multivariate analysis identified metastasis at presentation and monophasic tumor subtype as significant predictors of overall survival.
- Monophasic subtype was the sole significant prognostic factor for progression-free survival.
Conclusions:
- Histologic subtype is the most important independent prognostic factor for synovial sarcoma, independent of tumor stage.
- Metastasis at presentation and monophasic histology are critical determinants of overall survival in synovial sarcoma.
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