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Wang Y, Ren Z, Shen YH, Fang XG, Li QL, Zhong YS, Zhang YQ, Chen WF, Zhou PH, Lin SL. Long-term outcomes of endoscopic resection for well-differentiated nonampullary duodenal neuroendocrine tumors. Gastrointest Endosc 2024; 100:481-491.e6. [PMID: 38431107 DOI: 10.1016/j.gie.2024.02.017] [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] [Received: 12/16/2023] [Revised: 02/17/2024] [Accepted: 02/18/2024] [Indexed: 03/05/2024]
Abstract
BACKGROUND AND AIMS Nonampullary duodenal neuroendocrine tumors (NAD-NETs) are rare, with limited evidence regarding endoscopic treatment. This study investigated the efficacy and safety of endoscopic resection of well-differentiated NAD-NETs and evaluated long-term outcomes, including local recurrence and metastasis. METHODS Seventy-eight patients with NAD-NETs who underwent endoscopic resection between January 2011 and August 2022 were included. Clinicopathologic characteristics and treatment outcomes were collected and analyzed. RESULTS En-bloc resection was achieved for 74 tumors (94.9%) and R0 resection for 68 tumors (87.2%). Univariate analysis identified tumors in the second part of the duodenum, tumor size ≥10 mm, and muscularis propria invasion as risk factors for noncurative resection. Two patients with R1 resection (vertical margin involvement) and 2 patients with lymphovascular invasion underwent additional surgery. Four patients experienced adverse events (5.1%), including 2 cases of delayed bleeding and 2 cases of perforation, all successfully managed conservatively. During a median follow-up period of 62.6 months, recurrence and lymph node metastasis were only detected in 1 patient with R1 resection 3 months after the original procedure. CONCLUSIONS Endoscopic resection is safe and effective and provides a favorable long-term outcome for patients with well-differentiated NAD-NETs without regional lymph node or distant metastasis.
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Affiliation(s)
- Yun Wang
- Endoscopy Center and Endoscopy Research Institute, Zhongshan Hospital, Fudan University, Shanghai, China; Shanghai Collaborative Innovation Center of Endoscopy, China
| | - Zhong Ren
- Endoscopy Center and Endoscopy Research Institute, Zhongshan Hospital, Fudan University, Shanghai, China; Shanghai Collaborative Innovation Center of Endoscopy, China
| | - Yue-Hong Shen
- Nursing Department, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Xi-Guo Fang
- Gastroenterology Department, People's Hospital of Yi'an District, Tonglin, China
| | - Quan-Lin Li
- Endoscopy Center and Endoscopy Research Institute, Zhongshan Hospital, Fudan University, Shanghai, China; Shanghai Collaborative Innovation Center of Endoscopy, China
| | - Yun-Shi Zhong
- Endoscopy Center and Endoscopy Research Institute, Zhongshan Hospital, Fudan University, Shanghai, China; Shanghai Collaborative Innovation Center of Endoscopy, China
| | - Yi-Qun Zhang
- Endoscopy Center and Endoscopy Research Institute, Zhongshan Hospital, Fudan University, Shanghai, China; Shanghai Collaborative Innovation Center of Endoscopy, China
| | - Wei-Feng Chen
- Endoscopy Center and Endoscopy Research Institute, Zhongshan Hospital, Fudan University, Shanghai, China; Shanghai Collaborative Innovation Center of Endoscopy, China
| | - Ping-Hong Zhou
- Endoscopy Center and Endoscopy Research Institute, Zhongshan Hospital, Fudan University, Shanghai, China; Shanghai Collaborative Innovation Center of Endoscopy, China.
| | - Sheng-Li Lin
- Endoscopy Center and Endoscopy Research Institute, Zhongshan Hospital, Fudan University, Shanghai, China; Shanghai Collaborative Innovation Center of Endoscopy, China.
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2
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de Jorge Huerta L, Solares Fernández I, Sánchez-Moreno B, Males Maldonado D, de Ibarrola Andrés C, Díaz-Simón R. Sporadic, non-functional, gastrin-producing duodenal neuroendocrine tumors: A retrospective study of an infrequent disease. J Dig Dis 2022; 23:455-461. [PMID: 36168962 PMCID: PMC10099524 DOI: 10.1111/1751-2980.13129] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Revised: 07/19/2022] [Accepted: 09/25/2022] [Indexed: 12/11/2022]
Abstract
OBJECTIVES Non-functioning gastrin-producing neuroendocrine neoplasms (NEN) of the duodenum are rare gastrointestinal tumors without a clinical syndrome due to gastrin production. Their incidence has significantly increased as an incidental finding during endoscopic studies. The aim of this study was to describe the characteristics and prognostic factors of this emergent and infrequent neoplasm. METHODS We performed a retrospective observational study based on the duodenal NENs samples with positive staining for gastrin at the Department of Pathology, University Hospital 12-de-Octubre (Madrid, Spain) between 2000 and 2017. Patients with clinically functional tumors ([Zollinger-Ellison syndrome] or gastrin >1000 pg/mL), with previously diagnosed multiple endocrine neoplasia (MEN) syndrome or synchronous neoplasia were excluded. Clinicopathological and therapeutic variables, follow-up, recurrence, and mortality data were collected. RESULTS In all, 21 patients were included. Most of the tumors were diagnosed incidentally as a single small polypoid lesion limited to mucosa/submucosa and with a low histological grade. Four (19.0%) patients presented with metastatic involvement at diagnosis (lymphatic and/or hepatic). These four patients also had a high or intermediate mitotic grade and infiltration further than submucosa. Local resection was applied in most cases as curative treatment. There were two cases of tumor recurrence and two tumor-related deaths with a 5-year disease-free survival of 81.0%. CONCLUSIONS The majority of these tumors were diagnosed at a localized stage and had a good prognosis with treatment. Nevertheless, given the potential metastatic risk, a close follow-up is necessary, especially in those with aggressive pathological factors such as deep infiltration or high histological grade.
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Affiliation(s)
- Lucía de Jorge Huerta
- Department of Internal Medicine, Hospital Universitario 12 de Octubre, Instituto de Investigación i + 12, Madrid, Spain
| | - Isabel Solares Fernández
- Department of Internal Medicine, Hospital Universitario 12 de Octubre, Instituto de Investigación i + 12, Madrid, Spain
| | - Beatriz Sánchez-Moreno
- Department of Internal Medicine, Hospital Universitario 12 de Octubre, Instituto de Investigación i + 12, Madrid, Spain
| | - David Males Maldonado
- Department of Endocrinology and Metabolism, Hospital Universitario 12 de Octubre, Instituto de Investigación i + 12, Madrid, Spain
| | - Carolina de Ibarrola Andrés
- Department of Anatomical Pathology, Hospital Universitario 12 de Octubre, Instituto de Investigación i + 12, Madrid, Spain
| | - Raquel Díaz-Simón
- Department of Internal Medicine, Hospital Universitario 12 de Octubre, Instituto de Investigación i + 12, Madrid, Spain
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3
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Matsueda K, Kanesaka T, Kitamura M, Shichijo S, Maekawa A, Yamamoto S, Takeuchi Y, Higashino K, Uedo N, Michida T, Honma K, Miyashiro I, Ishihara R. Favorable long-term outcomes of endoscopic resection for nonampullary duodenal neuroendocrine tumor. J Gastroenterol Hepatol 2021; 36:3329-3336. [PMID: 34142385 DOI: 10.1111/jgh.15586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 05/30/2021] [Accepted: 06/15/2021] [Indexed: 12/09/2022]
Abstract
BACKGROUND AND AIM The long-term outcomes of endoscopic resection for nonampullary duodenal neuroendocrine tumors are limited. We aimed to clarify it. METHODS Consecutive patients with nonampullary duodenal neuroendocrine tumors endoscopically treated at our institute between January 2005 and June 2020 were included in this retrospective study. En bloc and R0 resection rates and adverse events were evaluated as short-term outcomes of endoscopic resection. The 5-year overall and recurrence-free survival rates of patients after endoscopic resection were calculated as long-term outcomes. RESULTS Of 34 patients with 34 lesions, 33 patients (97%) underwent endoscopic mucosal resection, and one (3%) underwent endoscopic submucosal dissection. En bloc resection was achieved in 33 lesions (97%). R0 resection was achieved in 20 lesions (59%). The median tumor size was 6 mm (range: 3-13). Thirty-one lesions (91%) and three lesions (9%) were classified as G1 and G2, respectively. Lymphovascular invasion was observed in six lesions (18%). Intraprocedural perforation occurred in four patients (12%) who were conservatively treated with endoscopic closure. All 34 patients were followed up without additional treatment after endoscopic resection, and no recurrence or metastasis developed during the median follow-up period of 47.9 months (range: 9.0-187.1). The 5-year overall survival and recurrence-free survival rates were 87.1% and 100%, respectively. CONCLUSIONS Endoscopic resection provided a favorable long-term prognosis for patients with nonampullary duodenal neuroendocrine tumors without lymph node metastasis.
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Affiliation(s)
- Katsunori Matsueda
- Department of Gastrointestinal Oncology, Osaka International Cancer Institute, Osaka, Japan
| | - Takashi Kanesaka
- Department of Gastrointestinal Oncology, Osaka International Cancer Institute, Osaka, Japan.,Department of Gastroenterology and Hepatology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Masanori Kitamura
- Department of Diagnostic Pathology and Cytology, Osaka International Cancer Institute, Osaka, Japan
| | - Satoki Shichijo
- Department of Gastrointestinal Oncology, Osaka International Cancer Institute, Osaka, Japan
| | - Akira Maekawa
- Department of Gastrointestinal Oncology, Osaka International Cancer Institute, Osaka, Japan
| | - Sachiko Yamamoto
- Department of Gastrointestinal Oncology, Osaka International Cancer Institute, Osaka, Japan
| | - Yoji Takeuchi
- Department of Gastrointestinal Oncology, Osaka International Cancer Institute, Osaka, Japan
| | - Koji Higashino
- Department of Gastrointestinal Oncology, Osaka International Cancer Institute, Osaka, Japan
| | - Noriya Uedo
- Department of Gastrointestinal Oncology, Osaka International Cancer Institute, Osaka, Japan
| | - Tomoki Michida
- Department of Gastrointestinal Oncology, Osaka International Cancer Institute, Osaka, Japan
| | - Keiichiro Honma
- Department of Diagnostic Pathology and Cytology, Osaka International Cancer Institute, Osaka, Japan
| | - Isao Miyashiro
- Cancer Control Center, Osaka International Cancer Institute, Osaka, Japan
| | - Ryu Ishihara
- Department of Gastrointestinal Oncology, Osaka International Cancer Institute, Osaka, Japan
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4
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Yozgat A, Kekilli M, Altay M. Time to give up traditional methods for the management of gastrointestinal neuroendocrine tumours. World J Clin Cases 2021; 9:8627-8646. [PMID: 34734042 PMCID: PMC8546836 DOI: 10.12998/wjcc.v9.i29.8627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Revised: 05/19/2021] [Accepted: 08/24/2021] [Indexed: 02/06/2023] Open
Abstract
Neuroendocrine tumors (NETs) are a rare and heterogeneous disease group and constitute 0.5% of all malignancies. The annual incidence of NETs is increasing worldwide. The reason for the increase in the incidence of NETs is the detection of benign lesions, incidental detection due to the highest use of endoscopic and imaging procedures, and higher recognition rates of pathologists. There have been exciting developments regarding NET biology in recent years. Among these, first of all, somatostatin receptors and downstream pathways in neuroendocrine cells have been found to be important regulatory mechanisms for protein synthesis, hormone secretion, and proliferation. Subsequently, activation of the mammalian target of rapamycin pathway was found to be an important mechanism in angiogenesis and tumor survival and cell metabolism. Finally, the importance of proangiogenic factors (platelet-derived growth factor, vascular endothelial growth factor, fibroblastic growth factor, angiopoietin, and semaphorins) in the progression of NET has been determined. Using the combination of biomarkers and imaging methods allows early evaluation of the appropriateness of treatment and response to treatment.
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Affiliation(s)
- Ahmet Yozgat
- Department of Gastroenterology, Ufuk University, Ankara, 06510, Turkey
| | - Murat Kekilli
- Department of Gastroenterology, Gazi University, Ankara 06560, Turkey
| | - Mustafa Altay
- Department of Endocrinology and Metabolism, University of Health Sciences Turkey, Keçiören Health Administration and Research Center, Ankara 06190, Turkey
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5
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Wang R, Mohapatra S, Jovani M, Akshintala VS, Kamal A, Brewer OG, Kumbhari V, Shin EJ, Canto MI, Khashab MA, Singh VK, Lennon AM, Kalloo AN, Ngamruengphong S. Risk factors for lymph node metastasis and survival of patients with nonampullary duodenal carcinoid tumors treated with endoscopic therapy versus surgical resection: analysis of the Surveillance, Epidemiology, and End Results program. Gastrointest Endosc 2021; 93:1384-1392. [PMID: 33347833 DOI: 10.1016/j.gie.2020.12.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Accepted: 12/03/2020] [Indexed: 02/06/2023]
Abstract
BACKGROUND AND AIMS Endoscopic therapy (ET) has been used to treat nonampullary duodenal neuroendocrine tumors (NAD-NETs) ≤10 mm in size, but data on long-term outcomes are limited. In addition, management of 11- to 19-mm NAD-NETs is not well defined because of variable estimates of risk of metastasis. We aimed to determine the prevalence and risk factors of metastasis of NAD-NETs ≤19 mm and evaluate the long-term survival of patients after ET as compared with radical surgery. METHODS The Surveillance Epidemiology and End Result database was used to identify 1243 patients with T1-2 histologically confirmed NAD-NETs ≤19 mm in size. Cancer-specific survival (CSS) and overall survival (OS) were calculated. RESULTS Overall, 4.8% of cases had metastasis at the time of diagnosis, with lower prevalence in ≤10-mm lesions (3.1%) versus 11- to 19-mm lesions (11.7%, P < .001). The risk factors for metastases included invasion to the muscularis propria (odds ratio, 25.95; 95% confidence interval, 9.01-76.70), age <65 years (odds ratio, 1.93), submucosal involvement (odds ratio, 3.1), and 11 to 19 mm in size (vs ≤10 mm). In patients with well- to moderately differentiated T1-2N0M0 NAD-NETs ≤19 mm confined to the mucosa/submucosa who underwent ET or surgery, the 5-year CSS was 100%. The 5-year OS was similar between the ≤10-mm and 11- to 19-mm groups (86.6% vs 91.0%, P = .31) and the ET and surgery groups (87.4% vs 87.5%, P = .823). CONCLUSIONS In NAD-NETs, invasion to the muscularis propria is the strongest risk factor for metastasis. In the absence of metastasis, in lesions with well/moderate differentiation and without muscle invasion, ET is adequate for NAD-NETs ≤10 mm and is a viable option for 11- to 19-mm lesions.
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Affiliation(s)
- Rui Wang
- Gastroenterology Department, West China Hospital of Sichuan University, Chengdu, Sichuan, China; Department of Gastroenterology and Hepatology, Johns Hopkins University, Baltimore, Maryland, USA
| | - Sonmoon Mohapatra
- Department of Gastroenterology and Hepatology, Johns Hopkins University, Baltimore, Maryland, USA
| | - Manol Jovani
- Department of Gastroenterology and Hepatology, Johns Hopkins University, Baltimore, Maryland, USA
| | - Venkata S Akshintala
- Department of Gastroenterology and Hepatology, Johns Hopkins University, Baltimore, Maryland, USA
| | - Ayesha Kamal
- Department of Gastroenterology and Hepatology, Johns Hopkins University, Baltimore, Maryland, USA
| | - Olaya Gutierrez Brewer
- Department of Gastroenterology and Hepatology, Johns Hopkins University, Baltimore, Maryland, USA
| | - Vivek Kumbhari
- Department of Gastroenterology and Hepatology, Johns Hopkins University, Baltimore, Maryland, USA
| | - Eun Ji Shin
- Department of Gastroenterology and Hepatology, Johns Hopkins University, Baltimore, Maryland, USA
| | - Marcia I Canto
- Department of Gastroenterology and Hepatology, Johns Hopkins University, Baltimore, Maryland, USA
| | - Mouen A Khashab
- Department of Gastroenterology and Hepatology, Johns Hopkins University, Baltimore, Maryland, USA
| | - Vikesh K Singh
- Department of Gastroenterology and Hepatology, Johns Hopkins University, Baltimore, Maryland, USA
| | - Anne Marie Lennon
- Department of Gastroenterology and Hepatology, Johns Hopkins University, Baltimore, Maryland, USA
| | - Anthony Nicholas Kalloo
- Department of Gastroenterology and Hepatology, Johns Hopkins University, Baltimore, Maryland, USA
| | - Saowanee Ngamruengphong
- Department of Gastroenterology and Hepatology, Johns Hopkins University, Baltimore, Maryland, USA
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6
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Zhou YJ, Wang QW, Zhang QW, Chen JN, Wang XY, Gao YJ, Li XB. Patterns of Lymph Node Metastasis in Patients With T1/T2 Gastroduodenal Neuroendocrine Neoplasms: Implications for Endoscopic Treatment. Front Endocrinol (Lausanne) 2021; 12:658392. [PMID: 34122337 PMCID: PMC8194267 DOI: 10.3389/fendo.2021.658392] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Accepted: 05/06/2021] [Indexed: 12/20/2022] Open
Abstract
Guidelines have differed in their opinion regarding the indications for endoscopic resection of gastric-neuroendocrine neoplasms (g-NENs) and duodenal-NENs (d-NENs). We examined the association between size and lymph node metastasis (LNM) to identify candidates most suitable for endoscopic resection. We identified 706 patients with T1/T2 g-NENs and 621 patients with T1/T2 d-NENs from the SEER database. The prevalence of LNM and risk factors associated with LNM were analyzed. LNM was present in 8.1% of patients with gastroduodenal neuroendocrine tumors (NETs) and 31.6% of patients with neuroendocrine carcinomas (NECs). Multivariate logistic regression indicated that tumor size >10mm, greater invasion depth, and poor differentiation were independently associated with LNM. In addition, the percentage of g-NETs invading submucosa with LNM increased with tumor size (≤10 mm,3.9%;11-20 mm,8.6%;>20 mm,16.1%). However, in contrast to the low LNM risk in patients with small g-NETs (≤10 mm), we found that LNM rate exceeded 5% even for patients with small submucosal-infiltrating d-NETs. Among patients with nodal-negative g-NETs, the cause specific survival (CSS) was similar for those who received surgical resection and endoscopic resection. Among patients with d-NETs, the CSS was better for those who received endoscopic resection. In conclusion, patients with d-NETs had a higher probability of LNM than those with g-NETs. Endoscopic resection can be utilized for curative treatment of submucosa-infiltrating g-NETs and intramucosal d-NETs when the size is 10 mm or less. These results reinforce the need to search for LNM in lesions that are larger than 10 mm.
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7
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Schmocker RK, Wright MJ, Ding D, Javed AA, Cameron JL, Lafaro K, Burns WR, He J, Wolfgang CL, Burkhart RA. Duodenal, ampullary, and pancreatic neuroendocrine tumors: Oncologic outcomes are driven by tumor biology and tissue of origin. J Surg Oncol 2020; 123:416-424. [PMID: 33125737 DOI: 10.1002/jso.26285] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 10/09/2020] [Accepted: 10/19/2020] [Indexed: 12/19/2022]
Abstract
BACKGROUND Periampullary neuroendocrine tumors (NETs) arise from the duodenum, ampulla, and periampullary pancreas. Duodenal and ampullary NETs are rare and may have distinct biologic behavior from pancreatic NETs (P-NETs). We examined the outcomes of these entities. METHODS An institutional database was queried for patients undergoing resection for pancreatic head, duodenal, or ampullary NETs from 2000 to 2018. Patients with MEN1 syndrome or follow up less than 12 months were excluded. RESULTS Three hundred and ten patients were identified. Tumor locations were ampulla (n = 15), duodenum (n = 35) and pancreas (n = 260). Median follow-up and recurrence-free survival (RFS) were 60.9 (interquartile range [IQR]: 34.8-99.3) and 171.7 (IQR: 84.0-NR) months. Clinicopathologic data and survival outcomes were similar for duodenal and ampullary NETs (RFS: p = .347 and overall survival [OS]: p = .246) and were combined into an intestinal subtype (IS) group. There were no differences in OS or RFS when comparing IS-NET and P-NET. On multivariate analysis, tissue of origin was not associated with risk of recurrence. The current American Joint Committee on Cancer staging guidelines, which account for origin tissue, were predictive of outcomes for all subtypes. CONCLUSION Tissue of origin does not appear to impact long-term outcomes when comparing IS-NETs and P-NETs. The AJCC staging system offers good discriminatory capacity in the context of the tissue type.
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Affiliation(s)
- Ryan K Schmocker
- The Division of Hepatobiliary and Pancreatic Surgery, Johns Hopkins Hospital, Baltimore, Maryland, USA.,Division of Surgical Oncology, Department of Surgery, The University of Tennessee Graduate School of Medicine, Knoxville, Tennessee, USA
| | - Michael J Wright
- The Division of Hepatobiliary and Pancreatic Surgery, Johns Hopkins Hospital, Baltimore, Maryland, USA
| | - Ding Ding
- The Division of Hepatobiliary and Pancreatic Surgery, Johns Hopkins Hospital, Baltimore, Maryland, USA
| | - Ammar A Javed
- The Division of Hepatobiliary and Pancreatic Surgery, Johns Hopkins Hospital, Baltimore, Maryland, USA
| | - John L Cameron
- The Division of Hepatobiliary and Pancreatic Surgery, Johns Hopkins Hospital, Baltimore, Maryland, USA
| | - Kelly Lafaro
- The Division of Hepatobiliary and Pancreatic Surgery, Johns Hopkins Hospital, Baltimore, Maryland, USA
| | - William R Burns
- The Division of Hepatobiliary and Pancreatic Surgery, Johns Hopkins Hospital, Baltimore, Maryland, USA
| | - Jin He
- The Division of Hepatobiliary and Pancreatic Surgery, Johns Hopkins Hospital, Baltimore, Maryland, USA
| | - Christopher L Wolfgang
- The Division of Hepatobiliary and Pancreatic Surgery, Johns Hopkins Hospital, Baltimore, Maryland, USA
| | - Richard A Burkhart
- The Division of Hepatobiliary and Pancreatic Surgery, Johns Hopkins Hospital, Baltimore, Maryland, USA
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8
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Ahmed M. Gastrointestinal neuroendocrine tumors in 2020. World J Gastrointest Oncol 2020; 12:791-807. [PMID: 32879660 PMCID: PMC7443843 DOI: 10.4251/wjgo.v12.i8.791] [Citation(s) in RCA: 94] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 05/26/2020] [Accepted: 07/19/2020] [Indexed: 02/05/2023] Open
Abstract
Gastrointestinal neuroendocrine tumors are rare slow-growing tumors with distinct histological, biological, and clinical characteristics that have increased in incidence and prevalence within the last few decades. They contain chromogranin A, synaptophysin and neuron-specific enolase which are necessary for making a diagnosis of neuroendocrine tumor. Ki-67 index and mitotic index correlate with cellular proliferation. Serum chromogranin A is the most commonly used biomarker to assess the bulk of disease and monitor treatment and is raised in both functioning and non-functioning neuroendocrine tumors. Most of the gastrointestinal neuroendocrine tumors are non-functional. World Health Organization updated the classification of neuroendocrine tumors in 2017 and renamed mixed adenoneuroendocrine carcinoma into mixed neuroendocrine neoplasm. Gastric neuroendocrine tumors arise from enterochromaffin like cells. They are classified into 4 types. Only type I and type II are gastrin dependent. Small intestinal neuroendocrine tumor is the most common small bowel malignancy. More than two-third of them occur in the terminal ileum within 60 cm of ileocecal valve. Patients with small intestinal neuroendrocrine tumors frequently show clinical symptoms and develop distant metastases more often than those with neuroendocrine tumors of other organs. Duodenal and jejuno-ileal neuroendocrine tumors are distinct biologically and clinically. Carcinoid syndrome generally occurs when jejuno-ileal neuroendocrine tumors metastasize to the liver. Appendiceal neuroendocrine tumors are generally detected after appendectomy. Colonic neuroendocrine tumors generally present as a large tumor with local or distant metastasis at the time of diagnosis. Rectal neuroendocrine tumors are increasingly being diagnosed since the implementation of screening colonoscopy in 2000. Gastrointestinal neuroendocrine tumors are diagnosed and staged by endoscopy with biopsy, endoscopic ultrasound, serology of biomarkers, imaging studies and functional somatostatin scans. Various treatment options are available for curative and palliative treatment of gastrointestinal neuroendocrine tumors.
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Affiliation(s)
- Monjur Ahmed
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Thomas Jefferson University, Philadelphia, PA 19107, United States
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9
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Exarchou K, Howes N, Pritchard DM. Systematic review: management of localised low-grade upper gastrointestinal neuroendocrine tumours. Aliment Pharmacol Ther 2020; 51:1247-1267. [PMID: 32390152 DOI: 10.1111/apt.15765] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 02/24/2020] [Accepted: 04/12/2020] [Indexed: 02/06/2023]
Abstract
BACKGROUND Neuroendocrine tumours (NETs) of the stomach and duodenum are rare, but are increasing in incidence. Optimal management of localised, low-grade gastric and duodenal NETs remains controversial. AIMS To systematically review recent literature that has evaluated the management of localised low-grade gastric and duodenal NETs. METHODS A systematic literature search was conducted. Articles were screened and eligible articles fully assessed. Additional articles were identified through the included articles' reference lists. RESULTS Several relevant retrospective case series were identified, but there was considerable heterogeneity between studies and they reported a variety of parameters. Type I gastric NETs had an excellent prognosis and conservative management approaches such as endoscopic surveillance/resection were appropriate in most cases. Many type III gastric NETs were low grade and appeared to have a better prognosis than has previously been appreciated. Endoscopic rather than surgical resection was therefore effective in some patients who had small, low-grade tumours. Duodenal NETs were more heterogenous. Endoscopic resection was generally safe and effective in patients who had small, low-grade, nonfunctional, non-ampullary tumours. However, some patients, especially those with larger or ampullary duodenal NETs, required surgical resection. CONCLUSIONS Most type I gastric NETs behave indolently and surgical resection is only rarely indicated. Some type III gastric and duodenal NETs have a worse prognosis, but selected patients who have small, localised, nonfunctional, low-grade tumours are adequately and safely treated by endoscopic resection. Due to the complexity of this area, a multidisciplinary approach to management is strongly recommended.
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Affiliation(s)
- Klaire Exarchou
- Department of Cellular and Molecular Physiology, Institute of Translational Medicine, University of Liverpool, Liverpool, UK.,Liverpool University Hospitals NHS Foundation Trust, Liverpool, UK
| | - Nathan Howes
- Liverpool University Hospitals NHS Foundation Trust, Liverpool, UK
| | - David Mark Pritchard
- Department of Cellular and Molecular Physiology, Institute of Translational Medicine, University of Liverpool, Liverpool, UK.,Liverpool University Hospitals NHS Foundation Trust, Liverpool, UK
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10
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Nießen A, Bergmann F, Hinz U, Schimmack S, Hackert T, Büchler MW, Strobel O. Surgical resection for duodenal neuroendocrine neoplasia: Outcome, prognostic factors and risk of metastases. Eur J Surg Oncol 2020; 46:1088-1096. [PMID: 32088004 DOI: 10.1016/j.ejso.2020.01.030] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 12/18/2019] [Accepted: 01/23/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Clinical management of duodenal neuroendocrine neoplasms (dNEN) is controversial. The aim of this study was to assess the outcome of surgical management and to identify risk factors for metastatic disease. METHODS Patients undergoing surgery for dNEN were retrospectively analysed. Clinicopathologic features, perioperative outcome and survival were assessed. A literature review with focus on risk factors for metastatic disease was additionally performed. RESULTS 24 patients were identified. Out of 22 patients presenting with their primary tumour, 20 patients underwent curative resection and 18 patients received curative resection with systematic lymphadenectomy. 17 patients underwent formal oncological resection. Surgical mortality was 1 out of 24 patients. The 5-year overall survival rate was 67% in the entire cohort, 71% in patients undergoing resection for their primary tumour, 72% for patients undergoing curative resection with systematic lymphadenectomy, 75% for pN0 and 70% for pN1 tumours. Lymph node metastases were identified in 15 patients undergoing systematic lymphadenectomy, including 9 of 14 patients with tumours smaller than 2 cm, and 6 of 10 patients with G1 tumours. Literature review confirmed a high risk of metastases in small (58%) or G1 (24%) tumours. Tumour grade and angioinvasion were significantly associated with overall and disease-free survival. CONCLUSION Even well differentiated or small dNEN harbour a considerable risk of metastases. These data challenge the concepts of surveillance, local resection and endoscopic management for dNEN based on size and grading. Angioinvasion was identified as a strong negative predictor of overall and disease-free survival in dNEN.
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Affiliation(s)
- Anna Nießen
- Department of General, Visceral and Transplantation Surgery, Heidelberg University Hospital, Im Neuenheimer Feld 110, 69120, Heidelberg, Germany
| | - Frank Bergmann
- Institute of Pathology, Heidelberg University Hospital, Im Neuenheimer Feld 672, 69120, Heidelberg, Germany
| | - Ulf Hinz
- Department of General, Visceral and Transplantation Surgery, Heidelberg University Hospital, Im Neuenheimer Feld 110, 69120, Heidelberg, Germany
| | - Simon Schimmack
- Department of General, Visceral and Transplantation Surgery, Heidelberg University Hospital, Im Neuenheimer Feld 110, 69120, Heidelberg, Germany
| | - Thilo Hackert
- Department of General, Visceral and Transplantation Surgery, Heidelberg University Hospital, Im Neuenheimer Feld 110, 69120, Heidelberg, Germany
| | - Markus W Büchler
- Department of General, Visceral and Transplantation Surgery, Heidelberg University Hospital, Im Neuenheimer Feld 110, 69120, Heidelberg, Germany
| | - Oliver Strobel
- Department of General, Visceral and Transplantation Surgery, Heidelberg University Hospital, Im Neuenheimer Feld 110, 69120, Heidelberg, Germany.
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Outcomes of Surgical and Endoscopic Resection of Duodenal Neuroendocrine Tumours (NETs): a Systematic Review of the Literature. J Gastrointest Surg 2018; 22:1652-1658. [PMID: 29869091 DOI: 10.1007/s11605-018-3825-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Accepted: 05/17/2018] [Indexed: 01/31/2023]
Abstract
INTRODUCTION Duodenal neuroendocrine tumours (dNETs) comprise about 2% of all the NETs. Treatment of dNETs involves resection of the tumour either by endoscopic or surgical resection. Surgical or endoscopic local resection of the lesion is usually a more conservative and less morbid option compared with a more radical pancreaticoduodenectomy. However, inadequate clearance by local resection might result in recurrent disease with reduced overall survival. METHODS The current systematic review compared the differences in outcomes of endoscopic resection (ER), local resection (LR) and pancreaticoduodenectomy (PD) in the management of dNETs. Searches were performed on MEDLINE, PubMed, Embase and Cochrane databases using MeSH keyword combinations: 'duodenal', AND, 'neuroendocrine tumours'. All relevant articles published up to 2016 were included. Post-operative morbidity, R0 resection status and recurrence rates were the outcomes assessed. RESULTS Eight non-randomised retrospective studies with 335 participants were included (LR = 122; PD = 118; ER = 64). While PD was associated with higher morbidity compared with LR (27/64 vs. 10/74; P = 0.002), PD was associated with a higher incidence of an R0 resection (3/97 vs. 15/97; P = 0.007) as well as lower recurrence rates (3/51 vs. 6/46; P = 0.21). ER was associated with a higher positive resection margin status versus LR (22/51 vs. 14/91; P = 0.0002). Recurrence at follow-up was not different among patients with dNETs who underwent PD versus LR. CONCLUSIONS Radical surgical resection in the form of PD was associated with higher post-operative morbidity among patients with dNETs yet provided better margin clearance. Patients with dNETs need systematic evaluation with a view to obtain most of the information about the prognostic factors in order to tailor the treatment options.
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Management of Pancreatic and Duodenal Neuroendocrine Tumors. Updates Surg 2018. [DOI: 10.1007/978-88-470-3955-1_11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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