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Abstract
Our aim was to compare outcomes in patients who underwent unplanned excisions (UE) of soft-tissue sarcomas (STS) against patients with planned excisions (PE).The retrospective 7-institution US Sarcoma Collaborative database was used. Patients with curative-intent resection of truncal/extremity STS between 2000 and 2016 were included. Propensity score weighting analysis (PSWA) was performed. Endpoints were locoregional recurrence-free survival (LRFS), distant metastasis-free survival (DMFS), and disease-specific survival (DSS).One thousand five hundred and ninety-six patients were included. Eighty-two percent (n?=?1315) underwent PE and 18% (n?=?281) underwent UE. Compared with PE, patients with UE were younger with smaller tumors with similar tumor grade. Unmatched analysis revealed PE was associated with worse DMFS (hazard ratio [HR] 1.95, P?=?.009) and DSS (HR 1.78, P?=?.039), but not LRFS compared with UE. On PSWA, UE had earlier LRFS (3-year LRFS: 80.5% vs 89.8%, P?=?.039), but not DMFS or DSS. By grade, patients with high-grade tumors and UE had worse LRFS (1-year LRFS: 90% vs 94%, P?=?.015), but similar DMFS and DSS compared with PE. In low-grade patients, UE and PE had similar LRFS, DMFS, or DSS.UE of STS is not associated with worse prognosis compared to PE, though UE is associated with earlier locoregional recurrence in patients with high-grade tumors. Multimodality therapy is needed to achieve improved outcomes in these patients.
View details for DOI 10.1002/jso.25521
View details for PubMedID 31172536