Clinical Outcomes After Definitive Treatment of Soft Tissue Sarcoma of the Hand: A Retrospective Cohort Study of 109 Patients.
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PURPOSE: The purpose of this study was to provide updated data on oncologic outcomes following definitive surgical treatment of soft tissue sarcoma of the hand in a cohort of 109 patients, as well as to characterize risk factors for poor oncologic and functional outcomes. METHODS: We analyzed data from 109 consecutive patients who had definitive surgical treatment for soft tissue sarcoma of the hand performed between 1996 and 2019 by a single surgeon at a sarcoma center. Primary outcomes included functional outcome (assessed by Musculoskeletal Tumor Society scores), disease-free survival (DFS), and overall survival (OS). We compiled descriptive data and used a multivariable linear model to identify factors associated with functional outcomes. Kaplan-Meier methods were used to estimate 5- and 10-year DFS and OS. RESULTS: Patients had a median age of 36 years at presentation. Median follow-up was 6.1 years among patients alive at the end of follow-up. The median Musculoskeletal Tumor Society score was 29; functional outcome was worse among patients with high-grade tumors or complications. Among the 107 patients who became disease-free, there were four local recurrences (one with metastasis), six distant recurrences, and one death without recurrence. All local recurrences were deep tumors (two myxofibrosarcoma and two myxoinflammatory fibrosarcoma). Estimated 5- and 10-year DFS rates were 89% (95% confidence interval [CI]: 83% to 96%) and 88% (95% CI: 80% to 95%). There were seven deaths, and the estimated 5- and 10-year OS rates were 95% (95% CI: 90% to 100%) and 92% (95% CI: 84% to 100%). Larger tumor size and higher stage at diagnosis were associated with shorter DFS and OS in univariable analyses; low event rates precluded multivariable analysis of survival. CONCLUSIONS: Aggressive disease-specific surgical and multidisciplinary treatment can yield long DFS and OS, and good functional outcomes. However, complications and high-grade tumors are associated with worse functional scores. TYPE OF STUDY/LEVEL OF EVIDENCE: Prognostic II.