PMID- 28323985 OWN - NLM STAT- MEDLINE DCOM- 20170911 LR - 20180515 IS - 1945-7197 (Electronic) IS - 0021-972X (Linking) VI - 102 IP - 6 DP - 2017 Jun 1 TI - Utility of FDG-PET Imaging for Risk Stratification of Pancreatic Neuroendocrine Tumors in MEN1. PG - 1926-1933 LID - 10.1210/jc.2016-3865 [doi] AB - CONTEXT: Patients with multiple endocrine neoplasia type 1 (MEN1) are at high risk of malignant pancreatic neuroendocrine tumors (pNETs). Structural imaging is typically used to screen for pNETs but is suboptimal for stratifying malignant potential. OBJECTIVE: To determine the utility of fluorodeoxyglucose (18F) positron emission tomography/computed tomography (18F-FDG PET/CT) for predicting the malignant potential of pNETs in MEN1. DESIGN: Retrospective observational study. SETTING: Tertiary referral hospital. PATIENTS: Forty-nine adult patients with MEN1 carrying a common MEN1 mutation who underwent 18F-FDG PET/CT for MEN1 surveillance between 1 January 2010 and 30 September 2016. INTERVENTIONS: Structural and functional imaging (magnetic resonance imaging, CT, ultrasonography, and 18F-FDG PET/CT) and surgical histopathology. MAIN OUTCOME MEASURES: pNET size, behavior, and histopathology. RESULTS: Twenty-five (51.0%) of 49 patients studied had pancreatic lesions on structural imaging. Five (25%) of these had 18F-FDG-PET-avid lesions. In addition, two had solitary FDG-avid liver lesions, and one a pancreatic focus without structural correlate. Eight patients with pNETs underwent surgery (three FDG-avid lesions and five nonavid pNETs). The Ki-67 index was >/=5% in FDG-avid pNETs and <2% in nonavid pNETs. Overall, six of the eight (75%) patients with FDG-avid hepatopancreatic lesions harbored aggressive or metastatic NETs compared with one of 41 patients (2.4%) without hepatopancreatic FDG avidity [P < 0.001; sensitivity; 85.7% (95% confidence interval [CI], 48.7% to 99.3%); specificity, 95.2% (95% CI, 84.2% to 99.2%)]. CONCLUSION: 18F-FDG PET/CT is an effective screening modality in MEN1 for identifying pNETs of increased malignant potential. Surgical resection is recommended for FDG-avid pNETs. CI - Copyright (c) 2017 Endocrine Society FAU - Kornaczewski Jackson, Elena R AU - Kornaczewski Jackson ER AD - Department of Diabetes and Endocrinology, Royal Hobart Hospital, Hobart, Tasmania 7000, Australia. FAU - Pointon, Owen P AU - Pointon OP AD - Department of Nuclear Medicine, Royal Hobart Hospital, Hobart, Tasmania 7000, Australia. FAU - Bohmer, Robert AU - Bohmer R AD - Department of Surgery, Royal Hobart Hospital, Hobart, Tasmania 7000, Australia. FAU - Burgess, John R AU - Burgess JR AD - Department of Diabetes and Endocrinology, Royal Hobart Hospital, Hobart, Tasmania 7000, Australia. AD - School of Medicine, University of Tasmania, Hobart, Tasmania 7000, Australia. LA - eng PT - Journal Article PT - Observational Study PL - United States TA - J Clin Endocrinol Metab JT - The Journal of clinical endocrinology and metabolism JID - 0375362 RN - 0 (Radiopharmaceuticals) RN - 0Z5B2CJX4D (Fluorodeoxyglucose F18) SB - IM MH - Adult MH - Female MH - Fluorodeoxyglucose F18 MH - Humans MH - Liver Neoplasms/*diagnostic imaging/secondary MH - Magnetic Resonance Imaging MH - Male MH - Middle Aged MH - Multiple Endocrine Neoplasia Type 1/*complications MH - Neuroendocrine Tumors/*diagnostic imaging/etiology/secondary/surgery MH - Pancreatic Neoplasms/*diagnostic imaging/etiology/pathology/surgery MH - Positron Emission Tomography Computed Tomography MH - Radiopharmaceuticals MH - Retrospective Studies MH - Tumor Burden MH - Ultrasonography EDAT- 2017/03/23 06:00 MHDA- 2017/09/12 06:00 CRDT- 2017/03/22 06:00 PHST- 2016/12/06 00:00 [received] PHST- 2017/02/28 00:00 [accepted] PHST- 2017/03/23 06:00 [pubmed] PHST- 2017/09/12 06:00 [medline] PHST- 2017/03/22 06:00 [entrez] AID - 3063339 [pii] AID - 10.1210/jc.2016-3865 [doi] PST - ppublish SO - J Clin Endocrinol Metab. 2017 Jun 1;102(6):1926-1933. doi: 10.1210/jc.2016-3865.