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Incremental benefit of preoperative EUS for the detection of pancreatic neuroendocrine tumors: a meta-analysis
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences, Endocrine oncology.
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences, Endocrine oncology.
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2015 (English)In: Gastrointestinal Endoscopy, ISSN 0016-5107, E-ISSN 1097-6779, Vol. 81, no 4, 848-+ p.Article, review/survey (Refereed) Published
Abstract [en]

Background: Current guidelines recommend CT scan or magnetic resonance imaging as the initial imaging modalities for the work-up of suspected pancreatic neuroendocrine tumors (PNETs). Objective: To determine the incremental benefit of preoperative EUS (IBEUS) for the detection of suspected PNETs after other investigative modalities have been attempted. Design: This systematic review searched MEDLINE, EMBASE, bibliographies of included articles, and conference proceedings for studies reporting original data regarding the preoperative detection of PNETs. Pooled IBEUS was calculated by using random effects models. Heterogeneity was explored by using stratified meta-analysis and meta-regression. Evidence of small-study effects was assessed by using funnel plots and the Begg test. Patients: Patients with suspected PNETs. Interventions: EUS evaluation. Main Outcome Measurements: The pooled IBEUS for the detection of PNETs after CT scan, with or without additional investigative modalities. Results: Among 4505 citations identified, we included 17 cohort studies (612 patients). EUS identified PNETs in 97% of cases. Improved PNET identification with EUS was observed in all of the studies. After adjusting for small-study effects, meta-analysis showed that EUS alone could identify PNETs in approximately 1 in 4 patients (adjusted IBEUS 26%; 95% confidence interval, 17%-37%). The pooled IBEUS varied based on the study design, study size, type of CT scan used, and the number of modalities used prior to EUS. Limitations: The majority of included studies were retrospective. Small-study effects were observed. Conclusion: Preoperative EUS is associated with an increase in PNET detection after other modalities are attempted.

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2015. Vol. 81, no 4, 848-+ p.
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Gastroenterology and Hepatology
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URN: urn:nbn:se:uu:diva-252458DOI: 10.1016/j.gie.2014.12.031ISI: 000351668700006PubMedID: 25805462OAI: oai:DiVA.org:uu-252458DiVA: diva2:810545
Available from: 2015-05-07 Created: 2015-05-07 Last updated: 2017-12-04Bibliographically approved

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Tsolakis, Apostolos V.

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