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Sok C, Ajay PS, Tsagkalidis V, Kooby DA, Shah MM. Management of Gastric Neuroendocrine Tumors: A Review. Ann Surg Oncol 2024; 31:1509-1518. [PMID: 38062290 PMCID: PMC10922891 DOI: 10.1245/s10434-023-14712-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Accepted: 11/20/2023] [Indexed: 01/30/2024]
Abstract
Gastric neuroendocrine tumors (G-NET) are rare tumors arising from enterochromaffin-like cells of the gastric mucosa. They belong to a larger group called gastroenteropancreatic neuroendocrine tumors and are classified as low, intermediate, or high-grade tumors based on their proliferative indices. They are further categorized into three subtypes based on their morphologic characteristics, pathogenesis, and behavior. Types 1 and 2 tumors are characterized by elevated serum gastrin and are usually multifocal. They typically occur in the setting of atrophic gastritis or MEN1/Zollinger Ellison syndrome, respectively. Type 2 tumors are associated with the most symptoms, such as abdominal pain and diarrhea. Type 3 tumors are associated with normal serum gastrin, are usually solitary, and occur sporadically. This type has the most aggressive phenotype and metastatic potential. Treatment and prognosis for G-NET is dependent on their type, size, and stage. Type 1 has the best prognosis, and Type 3 has the worst. This review discusses the presentation, workup, and surgical management of these tumors.
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Affiliation(s)
- Caitlin Sok
- Division of Surgical Oncology, Department of Surgery, Emory University School of Medicine, Atlanta, GA, USA
| | - Pranay S Ajay
- Division of Surgical Oncology, Department of Surgery, Emory University School of Medicine, Atlanta, GA, USA
| | - Vasileios Tsagkalidis
- Division of Surgical Oncology, Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, USA
| | - David A Kooby
- Division of Surgical Oncology, Department of Surgery, Emory University School of Medicine, Atlanta, GA, USA
| | - Mihir M Shah
- Division of Surgical Oncology, Department of Surgery, Emory University School of Medicine, Atlanta, GA, USA.
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2
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Fagerstedt KW, Vesterinen T, Leijon H, Sihto H, Böhling T, Arola J. Somatostatin receptor expression in Merkel cell carcinoma: correlation with clinical data. Acta Oncol 2023; 62:1001-1007. [PMID: 37540574 DOI: 10.1080/0284186x.2023.2239481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Accepted: 07/14/2023] [Indexed: 08/06/2023]
Abstract
BACKGROUND Merkel cell carcinoma (MCC) is a rare, high-grade neuroendocrine neoplasm (NEN) of the skin. Somatostatin receptors (SSTRs) are G protein-linked receptors that regulate cell proliferation and growth. SSTRs are expressed in many NENs; however, scant information is available on their expression in MCCs or their association with clinical parameters and patient outcomes. MATERIAL AND METHODS This retrospective study was conducted at Helsinki University Hospital and the University of Helsinki. Using a tissue microarray, we investigated SSTR1-5 expression by immunohistochemistry in 99 MCC tissue samples. Samples were collected between 1983 and 2017 and coupled with the patients' clinical data. RESULTS SSTR2-SSTR5 were detected in 69%, 6%, 4%, and 1% of the tumours, respectively. However, SSTR1 expression was not observed. Cytoplasmic SSTR2 positivity was associated with metastatic disease at the time of diagnosis (p = 0.009), but it did not correlate with disease-specificity or overall survival. CONCLUSION SSTR2-5 expression was observed in MCCs. In particular, SSTR2 expression is clinically valid because it is associated with metastatic disease at the time of diagnosis and can thus serve as a prognostic marker. Moreover, SSTR2 overexpression provides a molecular basis for tumour imaging and treatment with somatostatin analogues.
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Affiliation(s)
- Klaus W Fagerstedt
- Department of Pathology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Tiina Vesterinen
- HUS Diagnostic Centre, Department of Pathology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Helena Leijon
- HUS Diagnostic Centre, Department of Pathology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Harri Sihto
- Department of Pathology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Tom Böhling
- Department of Pathology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Johanna Arola
- Department of Pathology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
- HUS Diagnostic Centre, Department of Pathology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
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3
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Eads JR, Halfdanarson TR, Asmis T, Bellizzi AM, Bergsland EK, Dasari A, El-Haddad G, Frumovitz M, Meyer J, Mittra E, Myrehaug S, Nakakura E, Raj N, Soares HP, Untch B, Vijayvergia N, Chan JA. Expert Consensus Practice Recommendations of the North American Neuroendocrine Tumor Society for the management of high grade gastroenteropancreatic and gynecologic neuroendocrine neoplasms. Endocr Relat Cancer 2023; 30:e220206. [PMID: 37184955 PMCID: PMC10388681 DOI: 10.1530/erc-22-0206] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Accepted: 05/15/2023] [Indexed: 05/16/2023]
Abstract
High-grade neuroendocrine neoplasms are a rare disease entity and account for approximately 10% of all neuroendocrine neoplasms. Because of their rarity, there is an overall lack of prospectively collected data available to advise practitioners as to how best to manage these patients. As a result, best practices are largely based on expert opinion. Recently, a distinction was made between well-differentiated high-grade (G3) neuroendocrine tumors and poorly differentiated neuroendocrine carcinomas, and with this, pathologic details, appropriate imaging practices and treatment have become more complex. In an effort to provide practitioners with the best guidance for the management of patients with high-grade neuroendocrine neoplasms of the gastrointestinal tract, pancreas, and gynecologic system, the North American Neuroendocrine Tumor Society convened a panel of experts to develop a set of recommendations and a treatment algorithm that may be used by practitioners for the care of these patients. Here, we provide consensus recommendations from the panel on pathology, imaging practices, management of localized disease, management of metastatic disease and surveillance and draw key distinctions as to the approach that should be utilized in patients with well-differentiated G3 neuroendocrine tumors vs poorly differentiated neuroendocrine carcinomas.
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Affiliation(s)
- Jennifer R Eads
- Division of Hematology and Oncology, Abramson Cancer Center, University of Pennsylvania, Pennsylvania, USA
| | | | - Tim Asmis
- Division of Medical Oncology, University of Ottawa, Ottawa, Ontario, Canada
| | - Andrew M Bellizzi
- Department of Pathology, University of Iowa Carver College of Medicine, Iowa City, Iowa, USA
| | - Emily K Bergsland
- Department of Medicine, University of California, San Francisco, California, USA
| | - Arvind Dasari
- Division of Gastrointestinal Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Ghassan El-Haddad
- Department of Diagnostic Imaging and Interventional Radiology, Moffitt Cancer Center and Research Institute, Tampa, Florida, USA
| | - Michael Frumovitz
- Division of Gynecologic Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Joshua Meyer
- Department of Radiation Oncology, Fox Chase Cancer Center, Philadelphia, Pennsylvania, USA
| | - Erik Mittra
- Division of Molecular Imaging and Therapy, Oregon Health & Science University, Portland, Oregon, USA
| | - Sten Myrehaug
- Department of Radiation Oncology, Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
| | - Eric Nakakura
- Department of Surgery, University of California, San Francisco, California, USA
| | - Nitya Raj
- Department of Medicine, Gastrointestinal Oncology Service, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Heloisa P Soares
- Division of Oncology, Huntsman Cancer Institute, University of Utah, Salt Lake City, Salt Lake City, Utah, USA
| | - Brian Untch
- Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Namrata Vijayvergia
- Department of Hematology and Oncology, Fox Chase Cancer Center, Philadelphia, Pennsylvania, USA
| | - Jennifer A Chan
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts, USA
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Reccia I, Pai M, Kumar J, Spalding D, Frilling A. Tumour Heterogeneity and the Consequent Practical Challenges in the Management of Gastroenteropancreatic Neuroendocrine Neoplasms. Cancers (Basel) 2023; 15:1861. [PMID: 36980746 PMCID: PMC10047148 DOI: 10.3390/cancers15061861] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 03/10/2023] [Accepted: 03/18/2023] [Indexed: 03/22/2023] Open
Abstract
Tumour heterogeneity is a common phenomenon in neuroendocrine neoplasms (NENs) and a significant cause of treatment failure and disease progression. Genetic and epigenetic instability, along with proliferation of cancer stem cells and alterations in the tumour microenvironment, manifest as intra-tumoural variability in tumour biology in primary tumours and metastases. This may change over time, especially under selective pressure during treatment. The gastroenteropancreatic (GEP) tract is the most common site for NENs, and their diagnosis and treatment depends on the specific characteristics of the disease, in particular proliferation activity, expression of somatostatin receptors and grading. Somatostatin receptor expression has a major role in the diagnosis and treatment of GEP-NENs, while Ki-67 is also a valuable prognostic marker. Intra- and inter-tumour heterogeneity in GEP-NENS, however, may lead to inaccurate assessment of the disease and affect the reliability of the available diagnostic, prognostic and predictive tests. In this review, we summarise the current available evidence of the impact of tumour heterogeneity on tumour diagnosis and treatment of GEP-NENs. Understanding and accurately measuring tumour heterogeneity could better inform clinical decision making in NENs.
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Affiliation(s)
- Isabella Reccia
- General Surgical and Oncology Unit, Policlinico San Pietro, Via Carlo Forlanini, 24036 Ponte San Pietro, Italy
| | - Madhava Pai
- Division of Surgery, Department of Surgery & Cancer, Imperial College London, Hammersmith Hospital, Du Cane Road, London W12 0HS, UK
| | - Jayant Kumar
- Division of Surgery, Department of Surgery & Cancer, Imperial College London, Hammersmith Hospital, Du Cane Road, London W12 0HS, UK
| | - Duncan Spalding
- Division of Surgery, Department of Surgery & Cancer, Imperial College London, Hammersmith Hospital, Du Cane Road, London W12 0HS, UK
| | - Andrea Frilling
- Division of Surgery, Department of Surgery & Cancer, Imperial College London, Hammersmith Hospital, Du Cane Road, London W12 0HS, UK
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5
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Gnanasegaran G, Agrawal K, Wan S. 18F-Fluorodeoxyglucose-PET-Computerized Tomography and non-Fluorodeoxyglucose PET-Computerized Tomography in Hepatobiliary and Pancreatic Malignancies. PET Clin 2022; 17:369-388. [PMID: 35717098 DOI: 10.1016/j.cpet.2022.03.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Molecular imaging with PET-computerized tomography (PET-CT) plays an important role in oncology. There is current and evolving evidence supporting the use of fluorodeoxyglucose (FDG) and non-FDG tracers in assessment patients with hepatobiliary and pancreatic cancers in various clinical scenarios. In this chapter, we discuss the advantages and limitations of FDG and non-FDG PET-CT in the management of patients with hepatobiliary and pancreatic cancers.
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Affiliation(s)
| | | | - Simon Wan
- University College London Hospitals NHS Foundation Trust, London, United Kingdom
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6
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Wang X, Qiu JJ, Tan CL, Chen YH, Tan QQ, Ren SJ, Yang F, Yao WQ, Cao D, Ke NW, Liu XB. Development and Validation of a Novel Radiomics-Based Nomogram With Machine Learning to Preoperatively Predict Histologic Grade in Pancreatic Neuroendocrine Tumors. Front Oncol 2022; 12:843376. [PMID: 35433485 PMCID: PMC9008322 DOI: 10.3389/fonc.2022.843376] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2021] [Accepted: 03/01/2022] [Indexed: 02/05/2023] Open
Abstract
Backgroud Tumor grade is the determinant of the biological aggressiveness of pancreatic neuroendocrine tumors (PNETs) and the best current tool to help establish individualized therapeutic strategies. A noninvasive way to accurately predict the histology grade of PNETs preoperatively is urgently needed and extremely limited. Methods The models training and the construction of the radiomic signature were carried out separately in three-phase (plain, arterial, and venous) CT. Mann–Whitney U test and least absolute shrinkage and selection operator (LASSO) were applied for feature preselection and radiomic signature construction. SVM-linear models were trained by incorporating the radiomic signature with clinical characteristics. An optimal model was then chosen to build a nomogram. Results A total of 139 PNETs (including 83 in the training set and 56 in the independent validation set) were included in the present study. We build a model based on an eight-feature radiomic signature (group 1) to stratify PNET patients into grades 1 and 2/3 groups with an AUC of 0.911 (95% confidence intervals (CI), 0.908–0.914) and 0.837 (95% CI, 0.827–0.847) in the training and validation cohorts, respectively. The nomogram combining the radiomic signature of plain-phase CT with T stage and dilated main pancreatic duct (MPD)/bile duct (BD) (group 2) showed the best performance (training set: AUC = 0.919, 95% CI = 0.916–0.922; validation set: AUC = 0.875, 95% CI = 0.867–0.883). Conclusions Our developed nomogram that integrates radiomic signature with clinical characteristics could be useful in predicting grades 1 and 2/3 PNETs preoperatively with powerful capability.
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Affiliation(s)
- Xing Wang
- Department of Pancreatic Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Jia-Jun Qiu
- Department of West China Biomedical Big Data Center, West China Hospital, Sichuan University, Chengdu, China
| | - Chun-Lu Tan
- Department of Pancreatic Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Yong-Hua Chen
- Department of Pancreatic Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Qing-Quan Tan
- Department of Pancreatic Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Shu-Jie Ren
- Department of Pancreatic Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Fan Yang
- Department of Radiology, West China Hospital, Sichuan University, Chengdu, China
| | - Wen-Qing Yao
- Department of Pathology, West China Hospital, Sichuan University, Chengdu, China
| | - Dan Cao
- Department of Oncology, West China Hospital, Sichuan University, Chengdu, China
| | - Neng-Wen Ke
- Department of Pancreatic Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Xu-Bao Liu
- Department of Pancreatic Surgery, West China Hospital, Sichuan University, Chengdu, China
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7
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Paiella S, Landoni L, Tebaldi S, Zuffante M, Salgarello M, Cingarlini S, D'Onofrio M, Parisi A, Deiro G, Manfrin E, Bianchi B, Montagnini G, Crinò SF, Bassi C, Salvia R. Dual-Tracer (68Ga-DOTATOC and 18F-FDG-)-PET/CT Scan and G1-G2 Nonfunctioning Pancreatic Neuroendocrine Tumors: A Single-Center Retrospective Evaluation of 124 Nonmetastatic Resected Cases. Neuroendocrinology 2022; 112:143-152. [PMID: 33508821 DOI: 10.1159/000514809] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Accepted: 01/28/2021] [Indexed: 11/19/2022]
Abstract
INTRODUCTION The combined use of 68gallium (68Ga)-DOTA-peptides and 18fluorine-fluoro-2-deoxyglucose (18F-FDG) positron emission tomography/computed tomography (PET/CT) scans in the workup of pancreatic neuroendocrine tumors (PanNETs) is controversial. This study aimed at assessing both tracers' capability to identify tumors and to assess its association with pathological predictors of recurrence. METHODS Prospectively collected, preoperative, dual-tracer PET/CT scan data of G1-G2, nonmetastatic, PanNETs that underwent surgery between January 2013 and October 2019 were retrospectively analyzed. RESULTS The final cohort consisted of 124 cases. There was an approximately equal distribution of males and females (50.8%/49.2%) and G1 and G2 tumors (49.2%/50.8%). The disease was detected in 122 (98.4%) and 64 (51.6%) cases by 68Ga-DOTATOC and by 18F-FDG PET/CT scans, respectively, with a combined sensitivity of 99.2%. 18F-FDG-positive examinations found G2 tumors more often than G1 (59.4 vs. 40.6%; p = 0.036), and 18F-FDG-positive PanNETs were larger than negative ones (median tumor size 32 mm, interquartile range [IQR] 21 vs. 26 mm, IQR 20; p = 0.019). The median Ki67 for 18F-FDG-positive and -negative examinations was 3 (IQR 4) and 2 (IQR 4), respectively (p = 0.029). At least 1 pathological predictor of recurrence was present in 74.6% of 18F-FDG-positive cases (vs. 56.7%; p = 0.039), whereas this was not found when dichotomizing the PanNETs by their dimensions (≤/>20 mm). None of the 2 tracers predicted nodal metastasis. The receiver operating characteristic curve analysis showed that 18F-FDG uptake higher than 4.2 had a sensitivity of 49.2% and specificity of 73.3% for differentiating G1 from G2 (AUC = 0.624, p = 0.009). CONCLUSION The complementary adoption of 68Ga-DOTATOC and 18F-FDG tracers may be valuable in the diagnostic workup of PanNETs despite not being a game-changer for the management of PanNETs ≤20 mm.
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Affiliation(s)
- Salvatore Paiella
- Pancreas Institute, General and Pancreatic Surgery Unit, University of Verona Hospital Trust, Verona, Italy
| | - Luca Landoni
- Pancreas Institute, General and Pancreatic Surgery Unit, University of Verona Hospital Trust, Verona, Italy
| | - Sarah Tebaldi
- Pancreas Institute, General and Pancreatic Surgery Unit, University of Verona Hospital Trust, Verona, Italy
| | - Michele Zuffante
- Nuclear Medicine Unit, Integrated University Hospital of Verona, Verona, Italy
| | - Matteo Salgarello
- Department of Nuclear Medicine, Ospedale Sacro Cuore Don Calabria, Negrar, Verona, Italy
| | - Sara Cingarlini
- Pancreas Institute, Oncology Unit, University of Verona Hospital Trust, Verona, Italy
| | - Mirko D'Onofrio
- Pancreas Institute, Radiology Unit, University of Verona Hospital Trust, Verona, Italy
| | - Alice Parisi
- Pancreas Institute, Department of Diagnostics and Public Health, Section of Pathology, University Verona Hospital Trust, Verona, Italy
| | - Giacomo Deiro
- Pancreas Institute, General and Pancreatic Surgery Unit, University of Verona Hospital Trust, Verona, Italy
| | - Erminia Manfrin
- Pancreas Institute, Department of Diagnostics and Public Health, Section of Pathology, University Verona Hospital Trust, Verona, Italy
| | - Beatrice Bianchi
- Pancreas Institute, General and Pancreatic Surgery Unit, University of Verona Hospital Trust, Verona, Italy
| | - Greta Montagnini
- Pancreas Institute, General and Pancreatic Surgery Unit, University of Verona Hospital Trust, Verona, Italy
| | - Stefano Francesco Crinò
- Pancreas Institute, Gastroenterology and Digestive Endoscopy Unit, University of Verona Hospital Trust, Verona, Italy
| | - Claudio Bassi
- Pancreas Institute, General and Pancreatic Surgery Unit, University of Verona Hospital Trust, Verona, Italy
| | - Roberto Salvia
- Pancreas Institute, General and Pancreatic Surgery Unit, University of Verona Hospital Trust, Verona, Italy
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Majala S, Vesterinen T, Seppänen H, Mustonen H, Sundström J, Schalin-Jäntti C, Gullichsen R, Schildt J, Kemppainen J, Arola J, Kauhanen S. Correlation of Somatostatin Receptor 1-5 Expression, [ 68Ga]Ga-DOTANOC, [ 18F]F-FDG PET/CT and Clinical Outcome in a Prospective Cohort of Pancreatic Neuroendocrine Neoplasms. Cancers (Basel) 2021; 14:cancers14010162. [PMID: 35008325 PMCID: PMC8750461 DOI: 10.3390/cancers14010162] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 12/23/2021] [Accepted: 12/26/2021] [Indexed: 11/25/2022] Open
Abstract
Simple Summary The need for prognostic and predictive biomarkers in pancreatic neuroendocrine neoplasms (PNENs) is great. Overexpression of somatostatin receptors (SSTRs) provides a molecular basis for imaging these tumors with 68Ga-labeled somatostatin (SST) PET/CT and for treatment with somatostatin analogs. We evaluated all 5 somatostatin receptors (SSTR1-5) with immunohistochemistry and prospectively compared the results with both [68Ga]Ga-DOTANOC and [18F]F-FDG PET/CT in a cohort of 21 non-functional (NF) PNENs. SSTR2 was the only SSTR subtype to correlate with [68Ga]Ga-DOTANOC PET/CT. High SSTR5 expression correlated with a low Ki-67 proliferation index, suggesting a better prognosis for these patients. Thus, our results confirm that SSTR2 has the highest impact on SSTR PET signaling of PNENs. Abstract Purpose: The aim of this study was to correlate immunohistochemical (IHC) tissue levels of SSTR1-5 with the receptor density generated from [68Ga]Ga-DOTANOC uptake in a prospective series of NF-PNENs. Methods: Twenty-one patients with a total of thirty-five NF-PNEN-lesions and twenty-one histologically confirmed lymph node metastases (LN+) were included in this prospective study. Twenty patients were operated on, and one underwent endoscopic ultrasonography and core-needle biopsy. PET/CT with both [68Ga]Ga-DOTANOC and [18F]F-FDG was performed on all patients. All histological samples were re-classified and IHC-stained with monoclonal SSTR1-5 antibodies and Ki-67 and correlated with [68Ga]Ga-DOTANOC and [18F]F-FDG PET/CT. Results: Expression of SSTR1-5 was detected in 74%, 91%, 80%, 14%, and 77% of NF-PNENs. There was a concordance of SSTR2 IHC with positive/negative [68Ga]Ga-DOTANOC finding (Spearman’s rho 0.382, p = 0.043). All [68Ga]Ga-DOTANOC-avid tumors expressed SSTR2 or SSTR3 or SSTR5. Expression of SSTR5 was higher in tumors with a low Ki-67 proliferation index (PI) (−0.353, 95% CI −0.654–0.039, p = 0.038). The mean Ki-67 PI for SSTR5 positive tumors was 2.44 (SD 2.56, CI 1.0–3.0) and 6.38 (SD 7.25, CI 2.25–8.75) for negative tumors. Conclusion: SSTR2 was the only SSTR subtype to correlate with [68Ga]Ga-DOTANOC PET/CT. Our prospective study confirms SSTR2 to be of the highest impact for SST PET/CT signal.
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Affiliation(s)
- Susanna Majala
- Department of Surgery, Division of Digestive Surgery and Urology, Turku University Hospital, University of Turku, P.O. Box 52, FIN-20521 Turku, Finland; (R.G.); (S.K.)
- Turku PET Centre, Turku University Hospital, P.O. Box 52, FIN-20521 Turku, Finland;
- Correspondence:
| | - Tiina Vesterinen
- HUSLAB, HUS Diagnostic Center, Department of Pathology, Helsinki University Hospital, University of Helsinki, P.O. Box 400, FIN-00029 Helsinki, Finland; (T.V.); (J.A.)
- Institute for Molecular Medicine Finland (FIMM), HiLIFE, University of Helsinki, P.O. Box 20, FIN-00014 Helsinki, Finland
| | - Hanna Seppänen
- Translational Cancer Medicine Research Program, Department of Surgery, Faculty of Medicine, Helsinki University Hospital, University of Helsinki, P.O. Box 340, FIN-00029 Helsinki, Finland; (H.S.); (H.M.)
| | - Harri Mustonen
- Translational Cancer Medicine Research Program, Department of Surgery, Faculty of Medicine, Helsinki University Hospital, University of Helsinki, P.O. Box 340, FIN-00029 Helsinki, Finland; (H.S.); (H.M.)
| | - Jari Sundström
- Department of Pathology, Turku University Hospital, P.O. Box 52, FIN-20521 Turku, Finland;
| | - Camilla Schalin-Jäntti
- Abdominal Center, Division of Endocrinology, Helsinki University Hospital, University of Helsinki, P.O. Box 340, FIN-00029 Helsinki, Finland;
| | - Risto Gullichsen
- Department of Surgery, Division of Digestive Surgery and Urology, Turku University Hospital, University of Turku, P.O. Box 52, FIN-20521 Turku, Finland; (R.G.); (S.K.)
| | - Jukka Schildt
- Department of Clinical Physiology and Nuclear Medicine, Helsinki University Hospital, Haartmaninkatu 4, P.O. Box 340, FIN-00029 Helsinki, Finland;
| | - Jukka Kemppainen
- Turku PET Centre, Turku University Hospital, P.O. Box 52, FIN-20521 Turku, Finland;
- Department of Clinical Physiology and Nuclear Medicine, Turku University Hospital, P.O. Box 52, FIN-20521 Turku, Finland
| | - Johanna Arola
- HUSLAB, HUS Diagnostic Center, Department of Pathology, Helsinki University Hospital, University of Helsinki, P.O. Box 400, FIN-00029 Helsinki, Finland; (T.V.); (J.A.)
| | - Saila Kauhanen
- Department of Surgery, Division of Digestive Surgery and Urology, Turku University Hospital, University of Turku, P.O. Box 52, FIN-20521 Turku, Finland; (R.G.); (S.K.)
- Turku PET Centre, Turku University Hospital, P.O. Box 52, FIN-20521 Turku, Finland;
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9
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Tariq A, Kwok M, Pearce A, Rhee H, Kyle S, Marsh P, Raveenthiran S, Wong D, McBean R, Westera J, Dunglison N, Esler R, Navaratnam A, Yaxley JW, Thomas P, Pattison DA, Roberts MJ. The role of dual tracer PSMA and FDG PET/CT in renal cell carcinoma (RCC) compared to conventional imaging: A multi-institutional case series with intra-individual comparison. Urol Oncol 2021; 40:66.e1-66.e9. [PMID: 34895817 DOI: 10.1016/j.urolonc.2021.11.006] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Accepted: 11/05/2021] [Indexed: 01/03/2023]
Abstract
PURPOSE The objective of this study was to perform an intra-individual dual tracer comparison of Fluorodeoxyglucose (FDG) and Prostate Specific Membrane Antigen (PSMA) computed tomography (CT)/Positron Emission Tomography (PET) against standard of care (SOC) imaging for the characterisation, staging and restaging of renal cell carcinoma (RCC). METHODS A multicentre retrospective cohort study was performed at 3 major tertiary referral institutions in Brisbane, Australia between 2015 and 2020. All patients who underwent both PSMA and FDG PET/CT following SOC imaging for investigation of RCC were identified. Clinical details, imaging characteristics and histopathology were collected prior to univariate statistical analysis. RESULTS Eleven patients who underwent dual tracer PET/CT were included. Mean age was 65.5 years (SD 8.8). Most patients were male (64%) with clear cell morphology (91%). The indication for dual tracer PET was staging (36%) and restaging after radical/partial nephrectomy (64%). Primary tumour assessment showed mixed avidity patterns (concordant 40%, discordant favouring PSMA 20%, and FDG 40%). Metastatic disease assessment showed concordant avidity in 6 patients (55%), concordant negative in 3 (27%), and discordant uptake favouring PSMA. PET outperformed SOC imaging for assessment of metastatic disease in 5 patients (45%) and equivalent for the remainder. A change in management was noted in three cases (27%). CONCLUSION Dual tracer FDG and PSMA PET/CT for assessment of primary and metastatic RCC were mostly concordant. PET imaging outperformed conventional imaging and led to a change in management for 1 in 4 patients. Further studies with larger samples sizes are required to validate these findings and identify characteristics to guide patient selection for selective or dual tracer use.
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Affiliation(s)
- Arsalan Tariq
- Department of Urology, Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia; Faculty of Medicine, The University of Queensland, Brisbane, Queensland, Australia
| | - Michael Kwok
- Faculty of Medicine, The University of Queensland, Brisbane, Queensland, Australia; Department of Urology, Redcliffe Hospital, Queensland, Australia
| | - Adam Pearce
- Department of Urology, Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia; Faculty of Medicine, The University of Queensland, Brisbane, Queensland, Australia; Wesley Urology Clinic, The Wesley Hospital, Brisbane, Queensland, Australia
| | - Handoo Rhee
- Faculty of Medicine, The University of Queensland, Brisbane, Queensland, Australia; Department of Urology, Princess Alexandra Hospital, Brisbane, Queensland, Australia
| | - Samuel Kyle
- Department of Diagnostic Radiology, Princess Alexandra Hospital, Brisbane, Queensland, Australia; Department of Nuclear Medicine, Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia
| | - Phillip Marsh
- Department of Diagnostic Radiology, Princess Alexandra Hospital, Brisbane, Queensland, Australia
| | - Sheliyan Raveenthiran
- Department of Urology, Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia; Department of Urology, Redcliffe Hospital, Queensland, Australia
| | - David Wong
- I-MED Radiology, The Wesley Hospital, Brisbane, Queensland, Australia
| | - Rhiannon McBean
- I-MED Radiology, The Wesley Hospital, Brisbane, Queensland, Australia
| | - Jurjen Westera
- Department of Urology, Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia; Faculty of Medicine, The University of Queensland, Brisbane, Queensland, Australia
| | - Nigel Dunglison
- Department of Urology, Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia; Faculty of Medicine, The University of Queensland, Brisbane, Queensland, Australia
| | - Rachel Esler
- Department of Urology, Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia; Wesley Urology Clinic, The Wesley Hospital, Brisbane, Queensland, Australia
| | - Anojan Navaratnam
- Department of Urology, Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia; Faculty of Medicine, The University of Queensland, Brisbane, Queensland, Australia
| | - John W Yaxley
- Department of Urology, Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia; Faculty of Medicine, The University of Queensland, Brisbane, Queensland, Australia; Wesley Urology Clinic, The Wesley Hospital, Brisbane, Queensland, Australia
| | - Paul Thomas
- Faculty of Medicine, The University of Queensland, Brisbane, Queensland, Australia; Department of Nuclear Medicine, Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia
| | - David A Pattison
- Faculty of Medicine, The University of Queensland, Brisbane, Queensland, Australia; Department of Nuclear Medicine, Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia
| | - Matthew J Roberts
- Department of Urology, Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia; Faculty of Medicine, The University of Queensland, Brisbane, Queensland, Australia; Department of Urology, Redcliffe Hospital, Queensland, Australia; Centre for Clinical Research, The University of Queensland, Brisbane, Queensland, Australia.
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10
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Gamal GH. The utility of 18F-FDG PET/CT in the diagnosis, staging of non-functioning pancreatic neuroendocrine tumors. THE EGYPTIAN JOURNAL OF RADIOLOGY AND NUCLEAR MEDICINE 2021. [DOI: 10.1186/s43055-021-00617-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
The non-functional PNETs are often discovered incidentally, they are commonly malignant and commonly present at a late stage with large size. We evaluate in this study the usefulness of 18F-FDG PET/CT in the detection and staging of non-functioning PNETs.
Results
Thirty patients with non-functioning PNETs were involved in this prospective study over a period starting from September 2016 to March 2021. Age ranged from 33 to 79 years. 18F-FDG PET/CT detected 26 patients had SUV max ≥ 2.5 of primary lesions and 4 lesions had SUV max < 2.5. There was no statistical significant between the site of the lesions and the type of grading of the tumors. 32 distant metastatic lesions were detected which show SUVmax ≥ 2.5 and only 9%where below 2.5. Of 30 patients, 4 patients (13.3%) of well differentiated tumor had altered their clinical strategies according to the results of PET/CT examinations. 18F-FDG PET/CT upstaged 1 patient with stage IB and 3 patients with IIA and B to stage IV.
Conclusion
The increased use of 18F-FDG PET/CT in the investigation of patient with PNETs allows for more accurate staging and therefore more appropriate management decision.
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11
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Ciobanu OA, Martin S, Fica S. Perspectives on the diagnostic, predictive and prognostic markers of neuroendocrine neoplasms (Review). Exp Ther Med 2021; 22:1479. [PMID: 34765020 PMCID: PMC8576627 DOI: 10.3892/etm.2021.10914] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Accepted: 09/23/2021] [Indexed: 12/15/2022] Open
Abstract
Neuroendocrine neoplasms (NENs) are a heterogeneous group of rare tumors with different types of physiology and prognosis. Therefore, prognostic information, including morphological differentiation, grade, tumor stage and primary location, are invaluable and contribute to the formulation of treatment decisions. Biomarkers that are currently used, including chromogranin A (CgA), serotonin and neuron-specific enolase, are singular parameters that cannot be used to accurately predict variables associated with tumor growth, including proliferation, metabolic rate and metastatic potential. In addition, site-specific biomarkers, such as insulin and gastrin, cannot be applied to all types of NENs. The clinical application of broad-spectrum markers, as it is the case for CgA, remains controversial despite being widely used. Due to limitations of the currently available mono-analyte biomarkers, recent studies were conducted to explore novel parameters for NEN diagnosis, prognosis, therapy stratification and evaluation of treatment response. Identification of prognostic factors for predicting NEN outcome is a critical requirement for the planning of adequate clinical management. Advances in ‘liquid’ biopsies and genomic analysis techniques, including microRNA, circulating tumor DNA or circulating tumor cells and sophisticated biomathematical analysis techniques, such as NETest or molecular image-based biomarkers, are currently under investigation as potentially novel tools for the management of NENs in the future. Despite these recent findings yielding promising observations, further research is necessary. The present review therefore summarizes the existing knowledge and recent advancements in the exploration of biochemical markers for NENs, with focus on gastroenteropancreatic-neuroendocrine tumors.
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Affiliation(s)
- Oana Alexandra Ciobanu
- Department of Endocrinology and Diabetes, Elias Hospital, 011461 Bucharest, Romania.,Department of Endocrinology, Carol Davila University of Medicine and Pharmacy, 20021 Bucharest, Romania
| | - Sorina Martin
- Department of Endocrinology and Diabetes, Elias Hospital, 011461 Bucharest, Romania.,Department of Endocrinology, Carol Davila University of Medicine and Pharmacy, 20021 Bucharest, Romania
| | - Simona Fica
- Department of Endocrinology and Diabetes, Elias Hospital, 011461 Bucharest, Romania.,Department of Endocrinology, Carol Davila University of Medicine and Pharmacy, 20021 Bucharest, Romania
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12
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Janson ET, Knigge U, Dam G, Federspiel B, Grønbaek H, Stålberg P, Langer SW, Kjaer A, Arola J, Schalin-Jäntti C, Sundin A, Welin S, Thiis-Evensen E, Sorbye H. Nordic guidelines 2021 for diagnosis and treatment of gastroenteropancreatic neuroendocrine neoplasms. ACTA ONCOLOGICA (STOCKHOLM, SWEDEN) 2021; 60:931-941. [PMID: 33999752 DOI: 10.1080/0284186x.2021.1921262] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND The diagnostic work-up and treatment of patients with gastroenteropancreatic (GEP) neuroendocrine neoplasms (NEN) has undergone major advances and new methods are introduced. Furthermore, an update of the WHO classification has resulted in a new nomenclature for GEP-NEN that is implemented in the clinic. AIM These Nordic guidelines summarise the Nordic Neuroendocrine Tumour Group's current view on how to diagnose and treat GEP-NEN patients and aims to be useful in the daily practice for clinicians.
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Affiliation(s)
- Eva Tiensuu Janson
- Department of Medical Sciences, Endocrine Oncology Uppsala University, Uppsala, Sweden*
| | - Ulrich Knigge
- Departments of Surgery C and Endocrinology PE, Faculty of Health Science, University of Copenhagen, Rigshospitalet, Copenhagen, Denmark*
| | - Gitte Dam
- Department of Hepatology and Gastroenterology, Aarhus University Hospital, Aarhus, Denmark*
| | - Birgitte Federspiel
- Department of Pathology, Faculty of Health Science, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark*
| | - Henning Grønbaek
- Department of Hepatology and Gastroenterology, Aarhus University Hospital, Aarhus, Denmark*
| | - Peter Stålberg
- Department of Surgical Sciences, Endocrine Surgery, Uppsala University, Uppsala, Sweden*
| | - Seppo W. Langer
- Department of Oncology, Rigshospitalet, Copenhagen, Denmark*
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark*
| | - Andreas Kjaer
- Department of Clinical Physiology, Nuclear Medicine & PET and Cluster for Molecular Imaging, Rigshospitalet, Copenhagen, Denmark*
- Department of Biomedical Sciences, University of Copenhagen, Copenhagen, Denmark*
| | - Johanna Arola
- Department of Pathology, HUSLAB, Helsinki University and Helsinki University Central Hospital, Helsinki, Finland
| | - Camilla Schalin-Jäntti
- Endocrinology, Abdominal Center, Helsinki University Hospital and University of Helsinki, Helsinki, Finland
| | - Anders Sundin
- Department of Surgical Sciences, Radiology, Uppsala University, Uppsala, Sweden*
| | - Staffan Welin
- Department of Medical Sciences, Endocrine Oncology Uppsala University, Uppsala, Sweden*
| | - Espen Thiis-Evensen
- Department for Organ Transplantation, Oslo University Hospital, Rikshospitalet, Oslo, Norway*
| | - Halfdan Sorbye
- Department of Oncology, Haukeland University Hospital, Bergen, Norway
- Department of Clinical Medicine, University of Bergen, Bergen, Norway
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13
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Zhou Z, Wang Z, Zhang B, Wu Y, Li G, Wang Z. Comparison of 68Ga-DOTANOC and 18F-FDG PET-CT Scans in the Evaluation of Primary Tumors and Lymph Node Metastasis in Patients With Rectal Neuroendocrine Tumors. Front Endocrinol (Lausanne) 2021; 12:727327. [PMID: 34539577 PMCID: PMC8440966 DOI: 10.3389/fendo.2021.727327] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Accepted: 08/16/2021] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Lymph node metastasis of rectal neuroendocrine tumors (RNETs) predicts poor prognosis. However, the assessment of lymph node metastasis remains a challenge. It has been reported that 68Ga-DOTANOC and 18F-FDG PET-CT scans could be employed in the work-up of rectal neuroendocrine tumors (RNETs). This study aimed to assess both tracers' ability to identify primary tumors and lymph node (LN) metastasis in RNETs. METHODS A total of 537 patients with RNETs were enrolled from January 2014 to January 2021. Both 68Ga-DOTANOC and 18F-FDG PET-CT scans were used to evaluate primary tumors and LN group metastasis. PET images were evaluated through visual and semiquantitative assessment. Receiver Operating Characteristics (ROC) curve analysis was used to investigate the performance of SUVmax of 68Ga-DOTANOC and 18F-FDG PET in predicting LN group metastasis. RESULTS Fifty-two patients with preoperative 68Ga-DOTANOC with 18F-FDG PET-CT scans underwent endoscopic biopsy or dissection of the primary tumor, while 11 patients underwent rectal surgery together with regional LN dissection. For primary tumors, 68Ga-DOTANOC had a sensitivity of 89.58% and a positive predictive value (PPV) of 95.56% through visual assessment, while 18F-FDG PET-CT showed 77.08% sensitivity and 97.37% PPV. For the prediction of LN group metastasis, 68Ga-DOTANOC PET-CT had 77.78% sensitivity and 91.67% specificity, while 18F-FDG PET-CT had 38.89% sensitivity and 100% specificity according to visual assessment. The area under the ROC curves (AUC) for 68Ga-DOTANOC PET/CT was 0.852 (95%CI:0.723-0.981) with an optimal SUVmax cut-off value of 2.25, while the AUC for 18F-FDG PET were 0.664 (95%CI:0.415-0.799) with an optimal SUVmax cut-off value of 1.05. CONCLUSIONS This study showed that 68Ga-DOTANOC PET-CT was a promising tool for detecting LN metastasis in RNETs with high sensitivity and specificity in visual assessment and semiquantitative assessment, which was better than 18F-FDG PET-CT.
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Affiliation(s)
- Zhihao Zhou
- Department of Gastrointestinal Surgery, First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Zhixiong Wang
- Department of Gastrointestinal Surgery, First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Bing Zhang
- Department of Nuclear Medicine, First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Yanzhang Wu
- Department of Gastrointestinal Surgery, First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Guanghua Li
- Department of Gastrointestinal Surgery, First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
- *Correspondence: Zhao Wang, ; Guanghua Li,
| | - Zhao Wang
- Department of Gastrointestinal Surgery, First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
- *Correspondence: Zhao Wang, ; Guanghua Li,
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14
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Calabrò D, Argalia G, Ambrosini V. Role of PET/CT and Therapy Management of Pancreatic Neuroendocrine Tumors. Diagnostics (Basel) 2020; 10:E1059. [PMID: 33297381 PMCID: PMC7762240 DOI: 10.3390/diagnostics10121059] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 12/02/2020] [Accepted: 12/04/2020] [Indexed: 12/12/2022] Open
Abstract
Pancreatic neuroendocrine neoplasms (panNENs) are heterogeneous neoplasms with neuroendocrine differentiation that show peculiar clinical and histomorphological features, with variable prognosis. In recent years, advances in knowledge regarding the pathophysiology and heterogeneous clinical presentation, as well as the availability of different diagnostic procedures for panNEN diagnosis and novel therapeutic options for patient clinical management, has led to the recognition of the need for an active multidisciplinary discussion for optimal patient care. Molecular imaging with positron emission tomography/computed tomography (PET/CT) has become indispensable for the management of panNENs. Several PET radiopharmaceuticals can be used to characterize either panNEN receptor expression or metabolism. The aim of this review is to offer an overview of all the currently used radiopharmaceuticals and of the new upcoming tracers for pancreatic neuroendocrine tumors (panNETs), and their clinical impact on therapy management. [68Ga]Ga-DOTA-peptide PET/CT (SSA-PET/CT) has high sensitivity, specificity, and accuracy and is recommended for the staging and restaging of any non-insulinoma well-differentiated panNEN cases to carry out detection of unknown primary tumor sites or early relapse and for evaluation of in vivo somatostatin receptors expression (SRE) to select patient candidates for peptide receptor radiometabolic treatment (PRRT) with 90Y or 177Lu and/or cold analogs. SSA-PET/CT also has a strong impact on clinical management, leading to a change in treatment in approximately a third of the cases. Its role for treatment response assessment is still under debate due to the lack of standardized criteria, even though some semiquantitative parameters seem to be able to predict response. [18F]FDG PET/CT generally shows low sensitivity in small growing and well-differentiated neuroendocrine tumors (NET; G1 and G2), while it is of utmost importance in the evaluation and management of high-grade NENs and also provides important prognostic information. When positive, [18F]FDG PET/CT impacts therapeutical management, indicating the need for a more aggressive treatment regime. Although FDG positivity does not exclude the patient from PRRT, several studies have demonstrated that it is certainly useful to predict response, even in this setting. The role of [18F]FDOPA for the study of panNET is limited by physiological uptake in the pancreas and is therefore not recommended. Moreover, it provides no information on SRE that has crucial clinical management relevance. Early acquisition of the abdomen and premedication with carbidopa may be useful to increase the accuracy, but further studies are needed to clarify its utility. GLP-1R agonists, such as exendin-4, are particularly useful for benign insulinoma detection, but their accuracy decreases in the case of malignant insulinomas. Being a whole-body imaging technique, exendin-PET/CT gives important preoperative information on tumor size and localization, which is fundamental for surgical planning as resection (enucleation of the lesion or partial pancreatic resection) is the only curative treatment. New upcoming tracers are under study, such as promising SSTR antagonists, which show a favorable biodistribution and higher tumor-to-background ratio that increases tumor detection, especially in the liver. [68Ga]pentixafor, an in vivo marker of CXCR4 expression associated with the behavior of more aggressive tumors, seems to only play a limited role in detecting well-differentiated NET since there is an inverse expression of SSTR2 and CXCR4 in G1 to G3 NETs with an elevation in CXCR4 and a decrease in SSTR2 expression with increasing grade. Other tracers, such as [68Ga]Ga-PSMA, [68Ga]Ga-DATA-TOC, [18F]SiTATE, and [18F]AlF-OC, are also under investigation.
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Affiliation(s)
- Diletta Calabrò
- Department of Nuclear Medicine, IRCCS Azienda Ospedaliera-Universitaria di Bologna, 40138 Bologna, Italy; (G.A.); (V.A.)
- Department of Nuclear Medicine, DIMES University of Bologna, 40138 Bologna, Italy
| | - Giulia Argalia
- Department of Nuclear Medicine, IRCCS Azienda Ospedaliera-Universitaria di Bologna, 40138 Bologna, Italy; (G.A.); (V.A.)
- Department of Nuclear Medicine, DIMES University of Bologna, 40138 Bologna, Italy
| | - Valentina Ambrosini
- Department of Nuclear Medicine, IRCCS Azienda Ospedaliera-Universitaria di Bologna, 40138 Bologna, Italy; (G.A.); (V.A.)
- Department of Nuclear Medicine, DIMES University of Bologna, 40138 Bologna, Italy
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15
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Mirzaei S, Lipp RW. Peptide and pseudo-peptide. THE QUARTERLY JOURNAL OF NUCLEAR MEDICINE AND MOLECULAR IMAGING : OFFICIAL PUBLICATION OF THE ITALIAN ASSOCIATION OF NUCLEAR MEDICINE (AIMN) [AND] THE INTERNATIONAL ASSOCIATION OF RADIOPHARMACOLOGY (IAR), [AND] SECTION OF THE SOCIETY OF RADIOPHARMACEUTICAL CHEMISTRY AND BIOLOGY 2020; 64:364-370. [DOI: 10.23736/s1824-4785.20.03311-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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16
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Wang Z, Cao F, Zhang Y, Fang Y, Li F. Risk Factors of Lymph Node Metastasis in Patients with Pancreatic Neuroendocrine Tumors (PNETs). Gastroenterol Res Pract 2020; 2020:1946156. [PMID: 33061957 PMCID: PMC7542491 DOI: 10.1155/2020/1946156] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2020] [Revised: 05/25/2020] [Accepted: 06/29/2020] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND The prognostic value of lymph node metastasis in patients with PNETs is controversial. Understanding the effect of lymph node metastasis on prognosis in pancreatic neuroendocrine tumors is helpful for surgery and follow-up. The purposes of this study are to identify predictors of lymph node metastasis among patients with PNETs and determine its prognostic associations. METHODS A retrospective analysis of the surveillance, epidemiology, and end results (SEER) database was performed. Patients with PNETs that underwent surgery and pathologic nodal staging were identified. Logistic regression and Cox regression were performed to identify independent predictors and prognostic factors, respectively. RESULTS Of 1956 patients (age: 56.8 ± 13.4 years, 53.3% males), 748 (38.2%) had lymph node metastasis. On multivariable analysis, tumor located in pancreas head, distant metastasis, and poorly differentiated, undifferentiated, and unknown differentiated histology grades were three independent risk factors of lymph node metastasis. In the entire cohort, lymph node metastasis indicated a worse overall survival (HR: 1.48, 95% CI: 1.17-1.88, p < 0.001) and disease-specific survival (HR: 1.87, 95% CI: 1.41-2.48, p < 0.001) on multivariable analysis. Lymph node metastasis was associated with worse overall (HR: 1.45, 95% CI: 1.08-1.93, p = 0.012) and disease-specific survival (HR: 2.13, 95% CI: 1.48-3.05, p < 0.001) in patients without distant metastasis on multivariate analysis. Lymph node metastasis was also independently associated with worse disease-specific survival among patients in well differentiation (HR: 2.16, 95% CI: 1.35-3.46, p = 0.001) and moderately differentiation (HR: 2.67, 95% CI: 1.28-5.56, p = 0.009) groups on multivariate analysis. CONCLUSIONS Tumor located in pancreas head, distant metastasis, and poorly differentiated, undifferentiated, and unknown differentiated histology grades were three independent risk factors for lymph node metastasis. Lymph node metastasis was an independent prognostic factor of worse OS and DSS in patients with tumor located in pancreas head. Lymph node metastasis was an independent prognostic factor of worse OS and DSS in patients without distant metastasis. Lymph node metastasis was an independent prognostic factor of worse DSS in well differentiation and moderately differentiation groups.
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Affiliation(s)
- Zhe Wang
- Department of General Surgery, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Feng Cao
- Department of General Surgery, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Yupeng Zhang
- Department of General Surgery, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Yu Fang
- Department of General Surgery, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Fei Li
- Department of General Surgery, Xuanwu Hospital, Capital Medical University, Beijing, China
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17
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Somatostatin Receptor PET/CT Imaging for the Detection and Staging of Pancreatic NET: A Systematic Review and Meta-Analysis. Diagnostics (Basel) 2020; 10:diagnostics10080598. [PMID: 32824388 PMCID: PMC7459584 DOI: 10.3390/diagnostics10080598] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 08/13/2020] [Indexed: 12/15/2022] Open
Abstract
We investigated the diagnostic performance of Somatostatin Receptor Positron Emission Tomography/Computed Tomography (SSR-PET/CT) for the detection of primary lesion and initial staging of pancreatic neuroendocrine tumors (pNETs). A comprehensive literature search up to January 2020 was performed selecting studies in presence of: sample size ≥10 patients; index test (i.e., 68Ga-DOTATOC or 68Ga-DOTANOC or 68Ga-DOTATATE PET/CT); and outcomes (i.e., detection rate (DR), true positive, true negative, false positive, and false-negative). The methodological quality was evaluated with QUADAS-2. Pooled DR and pooled sensitivity and specificity for the identification of the primary tumor were assessed by a patient-based and a lesion-based analysis. Thirty-eight studies were selected for the qualitative analysis, while 18 papers were included in the meta-analysis. The number of pNET patients ranged from 10 to 142, for a total of 1143 subjects. At patient-based analysis, the pooled sensitivity and specificity for the assessment of primary pNET were 79.6% (95% confidence interval (95%CI): 71–87%) and 95% (95%CI: 75–100%) with a heterogeneity of 59.6% and 51.5%, respectively. Pooled DR for the primary lesion was 81% (95%CI: 65–90%) and 92% (95%CI: 80–97%), respectively, at patient-based and lesion-based analysis. In conclusion, SSR-PET/CT has high DR and diagnostic performances for primary lesion and initial staging of pNETs.
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