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SHR Neuro Krebs Kardio Lipid Stoffw Microb

Smolle, MA; van Praag, VM; Posch, F; Bergovec, M; Leitner, L; Friesenbichler, J; Heregger, R; Riedl, JM; Pichler, M; Gerger, A; Szkandera, J; Stöger, H; Smolle-Jüttner, FM; Liegl-Atzwanger, B; Fiocco, M; van de Sande, MA; Leithner, A.
Surgery for metachronous metastasis of soft tissue sarcoma - A magnitude of benefit analysis using propensity score methods.
Eur J Surg Oncol. 2019; 45(2):242-248 Doi: 10.1016/j.ejso.2018.06.019
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Führende Autor*innen der Med Uni Graz
Smolle Maria Anna
Co-Autor*innen der Med Uni Graz
Bergovec Marko
Friesenbichler Jörg
Gerger Armin
Leithner Andreas
Leitner Lukas
Liegl-Atzwanger Bernadette
Pichler Martin
Posch Florian
Riedl Jakob
Smolle-Juettner Freyja-Maria
Stöger Herbert
Szkandera Joanna

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Metastasectomy is hypothesised to improve OS in metastatic STS, but evidence in favour of this approach derives from non-controlled single-arm cohorts affected by selection bias. The objective was to quantify the effect of metastasectomy vs. non-surgical management on overall survival (OS) in patients with metachronous metastases from extremity- and trunk soft tissue sarcoma (STS). From a population of 1578 STS patients, 135 patients who underwent surgery for localised STS at two European centres between 1998 and 2015 and developed metachronous STS metastases were included. Propensity score analyses with inverse-probability-of-treatment-weights (IPTW) and landmark analyses were performed to control for selection and immortal time bias, respectively. OS was significantly longer in the 68 patients undergoing metastasectomy than in the 67 patients who were treated non-invasively for their metastasis (10-year OS: 23% vs. 4%; hazard ratio (HR) = 0.34, 95% CI: 0.22-0.53, p < 0.0001). This association prevailed after IPTW-weighting of the data to control for the higher prevalence of favourable prognostic factors in the surgery group (adjusted 10-year OS: 17% vs. 3%, log-rank p < 0.0001; HR = 0.33, 95% CI: 0.20-0.52, p < 0.0001). Five-year OS estimates were 27.8% in patients who had and 14.5% in patients who had not undergone metastasectomy within the first 3 months after diagnosis of a metastasis (p < 0.0001). In this observational bi-centre study, metastasectomy was associated with prolonged survival in patients with metachronous STS metastases. In the absence of randomized studies, our results indicate that metastasectomy should be considered as an important treatment option for metachronous STS metastases. Copyright © 2018 Elsevier Ltd, BASO ~ The Association for Cancer Surgery, and the European Society of Surgical Oncology. All rights reserved.

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Soft tissue sarcoma
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