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Bösch, Florian; Bruns, Christiane J.; Guba, Markus; Werner, Jens; Angele, Martin K.; Hofmann, Katharina; Coenen, Michaela; Pratschke, Sebastian; Thomas, Michael; Knösel, Thomas (2018): Surgical treatment of pNET - Experience of a \textquotedblhigh-volume\textquotedbl center. In: Surgical Oncology, Vol. 27, Nr. 3: S. 409-414
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Abstract

BACKGROUND Neuroendocrine tumors of the pancreas (pNETs) are a rare disease. Grading according to the Ki67-index is the most validated risk factor. Nevertheless, controversies exist concerning other prognostic factors. The aim of this study was to evaluate published risk factors. METHODS Patients with pancreatic NETs who underwent surgery at our department from 2000 to 2014 were analyzed. The patient and tumor characteristics were evaluated. Kaplan-Meier analyses, univariate calculations as well as multivariate analyses were performed. RESULTS In total, 98 patients underwent surgery due to a pNET. The final study population consisted of 88 patients. Univariate analysis demonstrated that overall survival is influenced by tumor grading, local resection margin and presence of distant metastases. However, in the multivariate analysis, only grading and the resection margin had prognostic significance. The size of the primary tumor directly correlated with the probability of metastases. Multivisceral operations had no influence on morbidity or mortality. CONCLUSIONS Resection of pNETs is the only curative treatment and is safe. Since the incidence of pNETs is low, treatment should be performed at a high-volume center.