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Modica R, Benevento E, Liccardi A, Cannavale G, Minotta R, DI Iasi G, Colao A. Recent advances and future challenges in the diagnosis of neuroendocrine neoplasms. Minerva Endocrinol (Torino) 2024; 49:158-174. [PMID: 38625065 DOI: 10.23736/s2724-6507.23.04140-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/17/2024]
Abstract
Neuroendocrine neoplasms (NEN) are a heterogeneous group of malignancies with increasing incidence, whose diagnosis is usually delayed, negatively impacting on patients' prognosis. The latest advances in pathological classifications, biomarker identification and imaging techniques may provide early detection, leading to personalized treatment strategies. In this narrative review the recent developments in diagnosis of NEN are discussed including progresses in pathological classifications, biomarker and imaging. Furthermore, the challenges that lie ahead are investigated. By discussing the limitations of current approaches and addressing potential roadblocks, we hope to guide future research directions in this field. This article is proposed as a valuable resource for clinicians and researchers involved in the management of NEN. Update of pathological classifications and the availability of standardized templates in pathology and radiology represent a substantially improvement in diagnosis and communication among clinicians. Additional immunohistochemistry markers may now enrich pathological classifications, as well as miRNA profiling. New and multi-analytical circulating biomarkers, as liquid biopsy and NETest, are being proposed for diagnosis but their validation and availability should be improved. Radiological imaging strives for precise, non-invasive and less harmful technique to improve safety and quality of life in NEN patient. Nuclear medicine may benefit of somatostatin receptors' antagonists and membrane receptor analogues. Diagnosis in NEN still represents a challenge due to their complex biology and variable presentation. Further advancements are necessary to obtain early and minimally invasive diagnosis to improve patients' outcomes.
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Affiliation(s)
- Roberta Modica
- Unit of Endocrinology, Diabetology and Andrology, Department of Clinical Medicine and Surgery, University of Naples Federico II, Naples, Italy -
| | - Elio Benevento
- Unit of Endocrinology, Diabetology and Andrology, Department of Clinical Medicine and Surgery, University of Naples Federico II, Naples, Italy
| | - Alessia Liccardi
- Unit of Endocrinology, Diabetology and Andrology, Department of Clinical Medicine and Surgery, University of Naples Federico II, Naples, Italy
| | - Giuseppe Cannavale
- Unit of Endocrinology, Diabetology and Andrology, Department of Clinical Medicine and Surgery, University of Naples Federico II, Naples, Italy
| | - Roberto Minotta
- Unit of Endocrinology, Diabetology and Andrology, Department of Clinical Medicine and Surgery, University of Naples Federico II, Naples, Italy
| | - Gianfranco DI Iasi
- Unit of Endocrinology, Diabetology and Andrology, Department of Clinical Medicine and Surgery, University of Naples Federico II, Naples, Italy
| | - Annamaria Colao
- Unit of Endocrinology, Diabetology and Andrology, Department of Clinical Medicine and Surgery, University of Naples Federico II, Naples, Italy
- UNESCO Chair "Education for Health and Sustainable Development", University of Naples Federico II, Naples, Italy
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Shetty AJ, Das L, Jayant SS, Bhadada SK, Kumar R, Gulati A, Rana SS, Singh H, Saikia UN, Behera A, Mittal BR, Walia R, Dutta P. Diagnostic Modalities, Management Considerations, and Outcomes of Insulinoma: A Case Series from a Tertiary Care Centre. Indian J Endocrinol Metab 2024; 28:279-288. [PMID: 39086573 PMCID: PMC11288522 DOI: 10.4103/ijem.ijem_359_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 03/28/2024] [Accepted: 05/09/2024] [Indexed: 08/02/2024] Open
Abstract
Introduction Insulinomas are rare, usually sporadic, and typically benign pancreatic neuroendocrine tumours. Pre-operative localization is challenging and evidence on comparative analysis of anatomic and scintigraphic modalities for pre-operative tumour localization is limited, even in contemporary series. Methods The current study was designed to study the clinical features and management challenges of insulinomas managed at a tertiary care centre. Clinical features, diagnosis, imaging techniques, surgical procedures, and outcomes details were collated. Pre-operative imaging techniques (CT/MRI, nuclear scintigraphy) were compared with intraoperative and histopathological findings to assess their accuracy of localization. Results Thirty-seven patients (15 females [42%]; median age 36 years [IQR 28-49]) were included in the study. In four patients (10.8%), the tumour occurred in the setting of multiple endocrine neoplasia type 1 (MEN 1) while the remaining were sporadic. The sensitivity of pre-operative localization was 61.5% (multiphasic CT), 66.6% (multiphasic MRI), 100% (68Ga Exendin-4 PET-CT), and 91.6% (EUS). Three patients with normal multiphasic CT had localization on 68Ga Exendin-4 PET-CT. The positive predictive value (PPV) of both Exendin-PET-CT and EUS was similar at 91.6% and 91.6%, respectively. All patients (except one with nesidioblastosis), who underwent enucleation or partial pancreatic resection, were cured. Conclusion 68Ga Exendin-4 PET-CT based is a non-invasive imaging modality that has high sensitivity and PPV and can be used as a first-line imaging modality. The overall prognosis of these tumours is good with high cure rates attained following surgical resection.
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Affiliation(s)
- Anirudh J. Shetty
- Department of Endocrinology, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Liza Das
- Department of Endocrinology, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Satyam S. Jayant
- Department of Endocrinology, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Sanjay K. Bhadada
- Department of Endocrinology, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Rajender Kumar
- Department of Nuclear Medicine, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Ajay Gulati
- Department of Radiology, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Surinder S. Rana
- Department of Gastroenterology, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Harmandeep Singh
- Department of Nuclear Medicine, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Uma N. Saikia
- Department of Histopathology, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Arunanshu Behera
- Department of Surgery, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Bhagwant R. Mittal
- Department of Endocrinology, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Rama Walia
- Department of Endocrinology, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Pinaki Dutta
- Department of Endocrinology, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
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Hofland J, Falconi M, Christ E, Castaño JP, Faggiano A, Lamarca A, Perren A, Petrucci S, Prasad V, Ruszniewski P, Thirlwell C, Vullierme MP, Welin S, Bartsch DK. European Neuroendocrine Tumor Society 2023 guidance paper for functioning pancreatic neuroendocrine tumour syndromes. J Neuroendocrinol 2023; 35:e13318. [PMID: 37578384 DOI: 10.1111/jne.13318] [Citation(s) in RCA: 89] [Impact Index Per Article: 44.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 05/09/2023] [Accepted: 06/13/2023] [Indexed: 08/15/2023]
Abstract
This ENETS guidance paper aims to provide practical advice to clinicians for the diagnosis, treatment and follow-up of functioning syndromes in pancreatic neuroendocrine tumours (NET). A NET-associated functioning syndrome is defined by the presence of a clinical syndrome combined with biochemical evidence of inappropriately elevated hormonal levels. Different hormonal syndromes can be encountered in pancreatic NET patients, including insulinoma, gastrinoma as well as the rare glucagonoma, VIPoma, ACTHoma, PTHrPoma, carcinoid syndrome, calcitoninoma, GHRHoma and somatostatinoma. The recommendations provided in this paper focus on the biochemical, genetic and imaging work-up as well as therapeutic management of the individual hormonal syndromes in well-differentiated, grade 1-3, functioning NET with the primary tumour originating in the pancreas, and for specific subtypes also in the duodenum.
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Affiliation(s)
- Johannes Hofland
- Department of Internal Medicine, Section of Endocrinology, ENETS Centre of Excellence, Erasmus MC Cancer Institute, Rotterdam, The Netherlands
| | - Massimo Falconi
- Pancreatic Surgery and Transplantation Unit, Pancreas Translational and Clinical Research Centre, ENETS Center of Excellence, San Raffaele Scientific Institute IRCCS, Milan, Italy
| | - Emanuel Christ
- ENETS Centre of Excellence for Neuroendocrine and Endocrine Tumours, University Hospital Basel, Basel, Switzerland
- Department of Endocrinology, Diabetology and Metabolism, University Hospital Basel, Basel, Switzerland
| | - Justo P Castaño
- Maimonides Biomedical Research Institute of Córdoba, Córdoba, Spain
- Department of Cell Biology, Physiology, and Immunology, University of Córdoba, Córdoba, Spain
- Hospital Universitario Reina Sofía, Córdoba, Spain
- Centro de Investigación Biomédica en Red de Fisiopatología de la Obesidad y Nutrición (CIBERobn), Córdoba, Spain
| | - Antongiulio Faggiano
- Endocrinology Unit, Department of Clinical and Molecular Medicine, Sant'Andrea Hospital, ENETS Centre of Excellence, Sapienza University of Rome, Rome, Italy
| | - Angela Lamarca
- Department of Oncology - OncoHealth Institute, Fundación Jiménez Díaz University Hospital, Madrid, Spain
- Department of Medical Oncology, The Christie NHS Foundation, Manchester, Division of Cancer Sciences, University of Manchester, Manchester, UK
| | - Aurel Perren
- Institute of Pathology, University of Bern, Bern, Switzerland
| | - Simona Petrucci
- Department of Clinical and Molecular Medicine, Faculty of Medicine and Psychology, Sapienza University of Rome, Rome, Italy
- Medical Genetics and Advanced Cell Diagnostics Unit, Sant Andrea University Hospital, Rome, Italy
| | - Vikas Prasad
- Division of Nuclear Medicine, Mallinckrodt Institute of Radiology, Washington University in St. Louis, St. Louis, Missouri, USA
| | - Philippe Ruszniewski
- Department of Pancreatology, FHU MOSAIC, Université Paris Cité - APHP Hôpital Beaujon, Clichy, France
| | | | - Marie-Pierre Vullierme
- Centre Hospitalier Annecy Genevois (CHANGE), Université Paris-Cité, Praticien Hospitalier Imagerie Médicale, Annecy, France
| | - Staffan Welin
- Department of Endocrine Oncology, Uppsala University Hospital, Uppsala, Sweden
| | - Detlef K Bartsch
- Department of Visceral, Thoracic and Vascular Surgery, Phillips-University Marburg and University Hospital Gießen Marburg GmbH, Marburg, Germany
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Grawe F, Rosenberger N, Ingenerf M, Beyer L, Eschbach R, Todica A, Seidensticker R, Schmid-Tannwald C, Cyran CC, Ricke J, Bartenstein P, Auernhammer CJ, Ruebenthaler J, Fabritius MP. Diagnostic performance of PET/CT in the detection of liver metastases in well-differentiated NETs. Cancer Imaging 2023; 23:41. [PMID: 37098632 PMCID: PMC10131442 DOI: 10.1186/s40644-023-00556-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Accepted: 04/13/2023] [Indexed: 04/27/2023] Open
Abstract
BACKGROUND The aim of this retrospective study was to compare the diagnostic accuracy of somatostatin receptor (SSR)-PET/CT to liver MRI as reference standard in the evaluation of hepatic involvement in neuroendocrine tumors (NET). METHODS An institutional database was screened for "SSR" imaging studies between 2006 and 2021. 1000 NET Patients (grade 1/2) with 2383 SSR-PET/CT studies and matching liver MRI in an interval of +3 months were identified. Medical reports of SSR-PET/CT and MRI were retrospectively evaluated regarding hepatic involvement and either confirmed by both or observed in MRI but not in SSR-PET/CT (false-negative) or in SSR-PET but not in MRI (false-positive). RESULTS Metastatic hepatic involvement was reported in 1650 (69.2%) of the total 2383 SSR-PET/CT imaging studies, whereas MRI detected hepatic involvement in 1685 (70.7%) cases. There were 51 (2.1%) false-negative and 16 (0.7%) false-positive cases. In case of discrepant reports, MRI and PET/CT were reviewed side by side for consensus reading. SSR-PET/CT demonstrated a sensitivity of 97.0% (95%CI: 96.0%, 97.7%), a specificity of 97.7% (95%CI: 96.3%, 98.7%), a PPV of 99.0% (95%CI: 98.4%, 99.4%) and NPV of 93.0% (95%CI: 91.0, 94.8%) in identifying hepatic involvement. The most frequent reason for false-negative results was the small size of lesions with the majority < 0.6 cm. CONCLUSION This study confirms the high diagnostic accuracy of SSR-PET/CT in the detection of hepatic involvement in NET patients based on a patient-based analysis of metastatic hepatic involvement with a high sensitivity and specificity using liver MRI imaging as reference standard. However, one should be aware of possible pitfalls when a single imaging method is used in evaluating neuroendocrine liver metastases in patients.
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Affiliation(s)
- Freba Grawe
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
- Department of Nuclear Medicine, University Hospital, LMU Munich, 81377, Munich, Germany
| | - Natalie Rosenberger
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Maria Ingenerf
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Leonie Beyer
- Department of Nuclear Medicine, University Hospital, LMU Munich, 81377, Munich, Germany
- Interdisciplinary Center of Neuroendocrine Tumors of the GastroEnteroPancreatic System (GEPNET-KUM, ENETS certified Center of Excellence), University Hospital, LMU Munich, 81377, Munich, Germany
| | - Ralf Eschbach
- Department of Nuclear Medicine, University Hospital, LMU Munich, 81377, Munich, Germany
| | - Andrei Todica
- Department of Nuclear Medicine, University Hospital, LMU Munich, 81377, Munich, Germany
- Interdisciplinary Center of Neuroendocrine Tumors of the GastroEnteroPancreatic System (GEPNET-KUM, ENETS certified Center of Excellence), University Hospital, LMU Munich, 81377, Munich, Germany
| | - Ricarda Seidensticker
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
- Interdisciplinary Center of Neuroendocrine Tumors of the GastroEnteroPancreatic System (GEPNET-KUM, ENETS certified Center of Excellence), University Hospital, LMU Munich, 81377, Munich, Germany
| | - Christine Schmid-Tannwald
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
- Interdisciplinary Center of Neuroendocrine Tumors of the GastroEnteroPancreatic System (GEPNET-KUM, ENETS certified Center of Excellence), University Hospital, LMU Munich, 81377, Munich, Germany
| | - Clemens C Cyran
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
- Interdisciplinary Center of Neuroendocrine Tumors of the GastroEnteroPancreatic System (GEPNET-KUM, ENETS certified Center of Excellence), University Hospital, LMU Munich, 81377, Munich, Germany
| | - Jens Ricke
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
- Interdisciplinary Center of Neuroendocrine Tumors of the GastroEnteroPancreatic System (GEPNET-KUM, ENETS certified Center of Excellence), University Hospital, LMU Munich, 81377, Munich, Germany
| | - Peter Bartenstein
- Department of Nuclear Medicine, University Hospital, LMU Munich, 81377, Munich, Germany
- Interdisciplinary Center of Neuroendocrine Tumors of the GastroEnteroPancreatic System (GEPNET-KUM, ENETS certified Center of Excellence), University Hospital, LMU Munich, 81377, Munich, Germany
| | - Christoph J Auernhammer
- Department of Internal Medicine 4, University Hospital, LMU Munich, 81377, Munich, Germany
- Interdisciplinary Center of Neuroendocrine Tumors of the GastroEnteroPancreatic System (GEPNET-KUM, ENETS certified Center of Excellence), University Hospital, LMU Munich, 81377, Munich, Germany
| | - Johannes Ruebenthaler
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
- Interdisciplinary Center of Neuroendocrine Tumors of the GastroEnteroPancreatic System (GEPNET-KUM, ENETS certified Center of Excellence), University Hospital, LMU Munich, 81377, Munich, Germany
| | - Matthias P Fabritius
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany.
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Sidrak MMA, De Feo MS, Corica F, Gorica J, Conte M, Filippi L, Evangelista L, De Vincentis G, Frantellizzi V. Role of Exendin-4 Functional Imaging in Diagnosis of Insulinoma: A Systematic Review. Life (Basel) 2023; 13:life13040989. [PMID: 37109517 PMCID: PMC10142629 DOI: 10.3390/life13040989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 04/04/2023] [Accepted: 04/10/2023] [Indexed: 04/29/2023] Open
Abstract
BACKGROUND Insulinomas are the most common neuroendocrine neoplasms of the pancreas. Diagnosis is made through patient clinical presentation with hypoglycemia symptoms and imaging, such as EUS, CT, MRI, and functional imaging. Exendin-4 PET/CT (and SPECT/CT) is a new prominent radiotracer developed to image insulinomas. The aim of the study is to evaluate whether exendin-4 imaging is a useful tool in imaging for insulinoma patients when other imaging methods do not reach them. METHODS MEDLINE research conducted on PubMed, Scopus, and Web of Science gathered a total of 501 papers. Studies that evaluated exendin-4 SPECT and PET in insulinoma patients were screened and assessed through QUADAS-2 for risk of bias and applicability concerns' assessment. Sensitivity, specificity, and accuracy were reported when available. RESULTS A total of 13 studies were deemed eligible for a QUADAS 2 review. Studies included ranged from 2009 to 2022. The most-used tracer was 68Ga-DOTA-exendin-4 in PET and 111In-DTPA-exendin-4 in SPECT. Exendin-4 labeled with 99mTc was also reported. The QUADAS-2 risk of bias assessment was overall low, with some unclear reports in the reference and index domains. Only two domains were at high risk of bias because of an explicated non-blind imaging review. Applicability concerns for bias were low in all domains. Reported sensitivities ranged from 95% to 100% and specificities from 20% to 100%. CONCLUSIONS exendin-4 imaging is a sensitive functional imaging tracer in both SPECT and PET applications, especially in suspicion of benign insulinomas located where endoscopic ultrasound cannot reach, being more sensitive than morfostructural imaging.
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Affiliation(s)
- Marko Magdi Abdou Sidrak
- Department of Radiological Sciences, Oncology and Anatomo-Pathology, Sapienza University of Rome, 00161 Rome, Italy
| | - Maria Silvia De Feo
- Department of Radiological Sciences, Oncology and Anatomo-Pathology, Sapienza University of Rome, 00161 Rome, Italy
| | - Ferdinando Corica
- Department of Radiological Sciences, Oncology and Anatomo-Pathology, Sapienza University of Rome, 00161 Rome, Italy
| | - Joana Gorica
- Department of Radiological Sciences, Oncology and Anatomo-Pathology, Sapienza University of Rome, 00161 Rome, Italy
| | - Miriam Conte
- Department of Radiological Sciences, Oncology and Anatomo-Pathology, Sapienza University of Rome, 00161 Rome, Italy
| | - Luca Filippi
- Department of Nuclear Medicine, Santa Maria Goretti Hospital, 04100 Latina, Italy
| | - Laura Evangelista
- Nuclear Medicine Unit, Department of Medicine (DIMED), University of Padua, Via Giustiniani, 35128 Padua, Italy
| | - Giuseppe De Vincentis
- Department of Radiological Sciences, Oncology and Anatomo-Pathology, Sapienza University of Rome, 00161 Rome, Italy
| | - Viviana Frantellizzi
- Department of Radiological Sciences, Oncology and Anatomo-Pathology, Sapienza University of Rome, 00161 Rome, Italy
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Refardt J, Hofland J, Wild D, Christ E. Molecular Imaging of Neuroendocrine Neoplasms. J Clin Endocrinol Metab 2022; 107:e2662-e2670. [PMID: 35380158 DOI: 10.1210/clinem/dgac207] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Indexed: 12/17/2022]
Abstract
The key for molecular imaging is the use of a radiotracer with a radioactive and a functional component. While the functional component targets a specific feature of the tumor, the radioactive component makes the target visible. Neuroendocrine neoplasms (NEN) are a diverse group of rare tumors that arise from neuroendocrine cells found mainly in the gastroenteropancreatic system, lung, thyroid, and adrenal glands. They are characterized by the expression of specific hormone receptors on the tumor cell surface, which makes them ideal targets for radiolabeled peptides. The most commonly expressed hormone receptors on NEN cells are the somatostatin receptors. They can be targeted for molecular imaging with various radiolabeled somatostatin analogs, but also with somatostatin antagonists, which have shown improved imaging quality. 18F-DOPA imaging has become a second-line imaging modality in NENs, with the exception of the evaluation of advanced medullary thyroid carcinoma. Alternatives for NENs with insufficient somatostatin receptor expression due to poor differentiation involve targeting glucose metabolism, which can also be used for prognosis. For the localization of the often-small insulinoma, glucagon-like peptide-1 (GLP-1) receptor imaging has become the new standard. Other alternatives involve metaiodobenzylguanidine and the molecular target C-X-C motif chemokine receptor-4. In addition, new radiopeptides targeting the fibroblast activation protein, the glucose-dependent insulinotropic polypeptide receptor and cholecystokinin-2 receptors have been identified in NENs and await further evaluation. This mini-review aims to provide an overview of the major molecular imaging modalities currently used in the field of NENs, and also to provide an outlook on future developments.
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Affiliation(s)
- Julie Refardt
- Department of Internal Medicine, Section of Endocrinology, ENETS Center of Excellence, Erasmus Medical Center, Rotterdam, the Netherlands
- ENETS Center of Excellence for Neuroendocrine and Endocrine Tumors, University Hospital Basel, Basel, Switzerland
- Department of Endocrinology, Diabetology and Metabolism, University Hospital Basel, Basel, Switzerland
| | - Johannes Hofland
- Department of Internal Medicine, Section of Endocrinology, ENETS Center of Excellence, Erasmus Medical Center, Rotterdam, the Netherlands
| | - Damian Wild
- ENETS Center of Excellence for Neuroendocrine and Endocrine Tumors, University Hospital Basel, Basel, Switzerland
- Division of Nuclear Medicine, University Hospital Basel, Basel, Switzerland
| | - Emanuel Christ
- ENETS Center of Excellence for Neuroendocrine and Endocrine Tumors, University Hospital Basel, Basel, Switzerland
- Department of Endocrinology, Diabetology and Metabolism, University Hospital Basel, Basel, Switzerland
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