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neuroendocrin tumors of the pancreas

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https://www.readbyqxmd.com/read/28533666/comparison-of-imaging-based-and-pathological-dimensions-in-pancreatic-neuroendocrine-tumors
#1
Salvatore Paiella, Harmony Impellizzeri, Elisabetta Zanolin, Giovanni Marchegiani, Marco Miotto, Anna Malpaga, Riccardo De Robertis, Mirko D'Onofrio, Borislav Rusev, Paola Capelli, Sara Cingarlini, Giovanni Butturini, Maria Vittoria Davì, Antonio Amodio, Claudio Bassi, Aldo Scarpa, Roberto Salvia, Luca Landoni
AIM: To establish the ability of magnetic resonance (MR) and computer tomography (CT) to predict pathologic dimensions of pancreatic neuroendocrine tumors (PanNET) in a caseload of a tertiary referral center. METHODS: Patients submitted to surgery for PanNET at the Surgical Unit of the Pancreas Institute with at least 1 preoperative imaging examination (MR or CT scan) from January 2005 to December 2015 were included and data retrospectively collected. Exclusion criteria were: multifocal lesions, genetic syndromes, microadenomas or mixed tumors, metastatic disease and neoadjuvant therapy...
May 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28515932/single-stage-laparoscopic-adrenalectomy-for-pheochromocytoma-and-enucleation-of-a-pancreatic-neuroendocrine-tumor-in-von-hippel-lindau-disease-a-case-report
#2
Marco Casaccia, Simona Macina, Rosario Fornaro
Von Hippel-Lindau (VHL) disease is an inherited syndrome with autosomal-dominant transmission, characterized by central nervous system and retinal hemangioblastomas, visceral cysts and tumors. Optimal surgical treatment, including its timing, remains a controversial topic. The present study reports the case of a 67-year-old female patient with adrenal and pancreatic manifestations of VHL. A laparoscopic cortex-sparing left adrenalectomy for a 4-cm pheochromocytoma and pancreatic enucleation for pancreatic polypeptidoma of the pancreas tail were performed during the same operative procedure...
May 2017: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/28510792/a-systematic-review-of-proinsulin-secreting-pancreatic-neuroendocrine-tumors
#3
Timothy D Murtha, Beatrice C Lupsa, Sachin Majumdar, Dhanpat Jain, Ronald R Salem
BACKGROUND: Pancreatic neuroendocrine tumors (PNETs) are a heterogeneous group of islet cell-derived neoplasms with a propensity toward hormone production. Among PNETs, proinsulin-secreting tumors (proinsulinomas) are exceedingly rare. The objective of this study is to collect and summarize the existing literature to provide a comprehensive evaluation of this uncommon disease. METHODS: A systematic review was performed to characterize the clinicopathologic features of proinsulinoma...
May 16, 2017: Journal of Gastrointestinal Surgery: Official Journal of the Society for Surgery of the Alimentary Tract
https://www.readbyqxmd.com/read/28504695/epigenetic-pathway-inhibitors-represent-potential-drugs-for-treating-pancreatic-and-bronchial-neuroendocrine-tumors
#4
K E Lines, M Stevenson, P Filippakopoulos, S Müller, H E Lockstone, B Wright, S Grozinsky-Glasberg, A B Grossman, S Knapp, D Buck, C Bountra, R V Thakker
Cancer is associated with alterations in epigenetic mechanisms such as histone modifications and methylation of DNA, and inhibitors targeting epigenetic mechanisms represent a novel class of anti-cancer drugs. Neuroendocrine tumors (NETs) of the pancreas (PNETs) and bronchus (BNETs), which may have 5-year survivals of <50% and as low as 5%, respectively, represent targets for such drugs, as >40% of PNETs and ~35% of BNETs have mutations of the multiple endocrine neoplasia type 1 (MEN1) gene, which encodes menin that modifies histones by interacting with histone methyltransferases...
May 15, 2017: Oncogenesis
https://www.readbyqxmd.com/read/28501471/comparison-of-endoscopic-ultrasound-guided-fine-needle-aspiration-and-pet-ct-in-preoperative-diagnosis-of-pancreatic-adenocarcinoma
#5
Jin-Ping Lai, Yong Yue, Wei Zhang, Yihua Zhou, David Frishberg, Laith H Jamil, James M Mirocha, Maha Guindi, Bonnie Balzer, Shikha Bose, Dengfeng Cao, Simon Lo, Xuemo Fan, Joanne K Rutgers
BACKGROUND: Endoscopic ultrasound guided fine needle aspiration (EUS-FNA) is the procedure of choice to investigate and sample pancreatic masses for the preoperative diagnosis of pancreatic ductal adenocarcinoma (PDAC). The role of (18)fluoro-deoxyglucose positron emission tomography/computed tomography (PET/CT) in PDAC is debated. This study evaluates the role of EUS-FNA as compared to PET/CT in the preoperative evaluation of PDAC. METHODS: Preoperative evaluation by PET/CT and EUS-FNA was performed on 25 patients with pancreatic solid lesions, who underwent a subsequent Whipple procedure or partial pancreatic resection...
April 13, 2017: Pancreatology: Official Journal of the International Association of Pancreatology (IAP) ... [et Al.]
https://www.readbyqxmd.com/read/28498280/immunohistochemical-characterization-of-the-origins-of-metastatic-well-differentiated-neuroendocrine-tumors-to-the-liver
#6
Zhaohai Yang, David S Klimstra, Ralph H Hruban, Laura H Tang
Metastatic neoplasms of unknown primary site pose a major challenge to patient management. As targeted therapies are now being tailored to neuroendocrine tumors (NETs) of different primary sites, identifying the origin of metastatic NETs has become increasingly important. Compared with more extensive efforts on metastatic adenocarcinomas of unknown primary, the literature on metastatic NETs (often to the liver) is relatively sparse and most studies are based on primary tumors. We sought to study metastatic well-differentiated NETs to the liver to identify markers that predict the site of origin...
May 11, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28484200/pancreatic-schwannoma-revealed-contrast-by-contrast-enhanced-ultrasonography-a-case-report
#7
Takatoshi Egami, Takanori Yamada, Tomoharu Matsuura, Atsushi Tsuji, Yurimi Takahashi, Yuzo Sasada, Hideto Ochiai, Shohachi Suzuki, Shioto Suzuki, Yasuhiko Saida
An asymptomatic pancreatic tumor was discovered in a 77-year-old man during a medical check-up. An abdominal computed tomography (CT) and magnetic resonance imaging (MRI) revealed a cystic mass containing a septum-like solid portion in the head of the pancreas, measuring 3.5cm in diameter. Additionally, abdominal contrast-enhanced ultrasonography (US) revealed increased flow in the solid portion and a tumor capsule in its early phase. We preoperatively diagnosed the lesion as a cystic-degenerated pancreatic neuroendocrine tumor or solid-pseudopapillary tumor and performed a pancreatoduodenectomy...
2017: Nihon Shokakibyo Gakkai Zasshi, the Japanese Journal of Gastro-enterology
https://www.readbyqxmd.com/read/28483790/effect-of-hormone-secretory-syndromes-on-neuroendocrine-tumor-prognosis
#8
Wouter T Zandee, Kimberly Kamp, R C S van Adrichem, R A Feelders, Wouter W de Herder
The treatment of hormone hypersecretory syndromes caused by neuroendocrine tumors (NETs) can be a major challenge. NETs originating from the small intestine often secrete serotonin causing flushing, diarrhea and valve fibrosis, leading to dehydration or heart failure in severe cases. NETs from the pancreas can secrete a wider variety of hormones, like insulin, glucagon and gastrin leading to distinct clinical syndromes. Historically mortality in patients with functioning NETs was high due to the complications caused by the hypersecretion of hormones...
May 8, 2017: Endocrine-related Cancer
https://www.readbyqxmd.com/read/28477012/minimally-invasive-distal-pancreatectomy-for-pnets-laparoscopic-or-robotic-approach
#9
Jiaqiang Zhang, Jiabin Jin, Shi Chen, Jiangning Gu, Yi Zhu, Kai Qin, Qian Zhan, Dongfeng Cheng, Hao Chen, Xiaxing Deng, Baiyong Shen, Chenghong Peng
BACKGROUND: The most effective and radical treatment for pancreatic neuroendocrine tumors (PNETs) is surgical resection. Minimally invasive surgery has been increasingly used in pancreatectomy. Initial results in robotic distal pancreatectomy (RDP) have been encouraging. Nonetheless, data comparing outcomes of RDP with those of laparoscopic distal pancreatectomy (LDP) in treating PNETs are rare. The aim of this study was to compare the safety and efficacy of RDP and LDP for PNETs. METHODS: From September 2010 to January 2017, operative parameters and perioperative outcomes in an initial experience with 43 consecutive patients undergoing RDP were collected and compared with those in 31 patients undergoing LDP...
May 16, 2017: Oncotarget
https://www.readbyqxmd.com/read/28470558/phase-ii-study-of-lanreotide-autogel-in-japanese-patients-with-unresectable-or-metastatic-well-differentiated-neuroendocrine-tumors
#10
Tetsuhide Ito, Yoshitaka Honma, Susumu Hijioka, Atsushi Kudo, Akira Fukutomi, Akira Nozaki, Yasutoshi Kimura, Fuyuhiko Motoi, Hiroyuki Isayama, Izumi Komoto, Seiichi Hisamatsu, Akihiro Nakajima, Akira Shimatsu
Background Lanreotide is a long-acting somatostatin analog with demonstrated efficacy against enteropancreatic neuroendocrine tumor (NET) in the phase III (CLARINET) study. Materials and Methods In this single-arm study, Japanese patients with grade (G) 1/G2 NET received lanreotide (120 mg/4 weeks) for 48 weeks. Those who completed the study were enrolled in a long-term extension study. The primary endpoint was the clinical benefit rate (CBR) defined as a complete response, partial response (PR), or stable disease (SD) over 24-weeks...
May 3, 2017: Investigational New Drugs
https://www.readbyqxmd.com/read/28464920/collision-of-ductal-adenocarcinoma-and-neuroendocrine-tumor-of-the-pancreas-a-case-report-and-review-of-the-literature
#11
Simone Serafini, Gianfranco Da Dalt, Gioia Pozza, Stella Blandamura, Michele Valmasoni, Stefano Merigliano, Cosimo Sperti
BACKGROUND: Simultaneous occurrence of exocrine and neuroendocrine tumors of the pancreas is very infrequent. We report a patient with an endocrine tumor in the pancreatic-duodenal area and extensive exocrine carcinoma involving the whole pancreas. CASE PRESENTATION: A 69-year-old woman was hospitalized in May 2016 for epigastric pain and weight loss. Her past medical history revealed an undefined main pancreatic duct dilation that was subsequently confirmed at CT scan (23 mm) and endoscopic ultrasound...
May 2, 2017: World Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28464579/-clinical-study-on-the-relationship-between-pancreatic-fistula-and-the-degree-of-pancreatic-fibrosis-after-pancreatic-and-duodenal-resection
#12
M W Yang, Y Deng, T Huang, L D Zhang
Objective: To explore the risk factors of pancreatic fistula after pancreatoduodenectomy and its relationship with pancreatic fibrosis. Methods: Retrospective analysis was made including 408 patients who underwent pancreaticoduodenectomy from January 2013 to December 2015 in Department of Hepatobiliary Surgery of the First Affiliated Hospital of Third Military Medical University. There were 274 males and females, aging from 14 to 82 years with an average age of 54.6 years. Postoperative pathological diagnosis: 285 cases with pancreatic ductal adenocarcinoma, 81 cases with gastrointestinal tumors, 13 cases with neuroendocrine tumors, 16 cases with inflammatory changes, 8 cases with pancreatic papillary tumors, 4 cases with serous cystadenoma, 1 case with retroperitoneal liposarcoma...
May 1, 2017: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/28456055/unraveling-molecular-pathways-of-poorly-differentiated-neuroendocrine-carcinomas-of-the-gastroenteropancreatic-system-a-systematic-review
#13
REVIEW
Daniel M Girardi, Andrea C B Silva, Juliana Florinda M Rêgo, Renata A Coudry, Rachel P Riechelmann
BACKGROUND: Poorly differentiated neuroendocrine carcinomas (NECs) are rare and aggressive tumors. Their molecular pathogenesis is still largely unknown, and consequently, the best therapeutic management also remains to be determined. We conducted a systematic review on molecular alterations found in gastroenteropancreatic NECs (GEP-NECs) and discuss potential applications of targeted therapies in setting. MATERIALS AND METHODS: Systematic review of studies about molecular features in tumor tissues of patients with GEP-NECs...
May 2017: Cancer Treatment Reviews
https://www.readbyqxmd.com/read/28454229/somatostatin-receptor-expression-indicates-improved-prognosis-in-gastroenteropancreatic-neuroendocrine-neoplasm-and-octreotide-long-acting-release-is-effective-and-safe-in-chinese-patients-with-advanced-gastroenteropancreatic-neuroendocrine-tumors
#14
Yuhong Wang, Wei Wang, Kaizhou Jin, Cheng Fang, Yuan Lin, Ling Xue, Shiting Feng, Zhiwei Zhou, Chenghao Shao, Minhu Chen, Xianjun Yu, Jie Chen
Gastroenteropancreatic neuroendocrine neoplasm (GEP-NEN) is known to overexpress somatostatin receptors (SSTRs), most commonly SSTR2 and SSTR5. The expression of SSTRs on tumor cells forms the basis for somatostatin analog treatment of patients with NEN. The present study detected the expression of SSTR2 and SSTR5 in GEP-NEN and investigated the efficacy and safety of octreotide long-acting release (LAR) in the treatment of advanced gastroenteropancreatic neuroendocrine tumors (GEP-NET) in China. The present study reported that functionality of the pancreas, G1 and G2 grading, NET classification and Tumor-Node-Metastasis stages I and II were associated with higher SSTR2 positive expression...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454228/prognostic-factors-of-long-term-outcome-in-surgically-resectable-pancreatic-neuroendocrine-tumors-a-12-year-experience-from-a-single-center
#15
Bo Zhou, Jixuan Duan, Sheng Yan, Jie Zhou, Shusen Zheng
The present study was performed to assess the prognostic factors with respect to patient survival and clinicopathological characteristics for patients who underwent surgery for pancreatic neuroendocrine tumors (PNETs). A retrospective review of patients pathologically diagnosed with PNETs at the First Affiliated Hospital, Zhejiang University School of Medicine (Hangzhou, Zhejiang, China) between September 2002 and September 2013 was conducted. The clinicopathological findings, overall survival (OS) rate and disease-free survival (DFS) rate of the patients with PNETs were analyzed...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28444105/clinical-pathological-and-demographic-factors-associated-with-development-of-recurrences-after-surgical-resection-in-elderly-patients-with-neuroendocrine-tumors
#16
C Shen, A Dasari, Y Chu, D M Halperin, S Zhou, Y Xu, Y T Shih, J C Yao
Background: Incidence of locoregional neuroendocrine tumors (NETs) is rising. However, after curative resection, the patterns and risk factors associated with recurrence remain unknown. Consensus guidelines recommend surveillance every 6-12 months for up to 10 years after surgery for resected, well-differentiated NETs irrespective of patient demographics, site, grade or stage of tumor with few exceptions. Patients and Methods: From the Surveillance, Epidemiology and End Results (SEER)-Medicare database, we identified localized and regional stage NET patients who underwent surgical resection between 1/2002 and 12/2011...
April 21, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/28440235/the-effect-of-solid-pancreatic-mass-lesions-on-pancreatic-duct-diameter-at-endoscopic-ultrasound
#17
Anand C Baxi, Qingwei Jiang, Jinghua Hao, Zhuo Yang, Kevin Woods, Steven Keilin, Field F Willingham, Qiang Cai
OBJECTIVES: To evaluate the effect of solid pancreatic masses on the pancreatic duct (PD) at the endoscopic ultrasound (EUS) and the relationship of the location/size of a mass and PD dilation. MATERIALS AND METHODS: Patients who underwent EUS for pancreatic indications from 2011 to 2013 at a single center were retrospectively identified. Those with biopsies that revealed adenocarcinoma or neuroendocrine tumors in the pancreas were identified and PD size was ascertained from EUS, computed tomography, or magnetic resonance imaging...
March 2017: Endoscopic Ultrasound
https://www.readbyqxmd.com/read/28415732/additional-k-ras-mutation-analysis-and-plectin-1-staining-improve-the-diagnostic-accuracy-of-pancreatic-solid-mass-in-eus-guided-fine-needle-aspiration
#18
Joo Kyung Park, Woo Hyun Paik, Byeong Jun Song, Ji Kon Ryu, Min A Kim, Jin Myung Park, Sang Hyub Lee, Yong-Tae Kim
BACKGROUND: One of the major genetic alterations in pancreatic ductal adenocarcinoma (PDAC) is the point mutation of K-ras gene. Plectin-1 was also recently identified as PDAC specific biomarker. The aim of this study was to investigate the improvement of diagnostic accuracy of endoscopic ultrasound-guided fine needle aspiration (EUS-FNA) by using additional K-ras mutation analysis and Plectin-1 staining in patients with pancreatic mass. METHODS: A total of 85 study patients with pancreatic mass underwent EUS-FNA and the final diagnoses were as follows; PDACs: 70 patients, pancreas neuroendocrine tumor: 4, metastasis to pancreas: 5, autoimmune pancreatitis: 3, chronic pancreatitis: 1, tuberculous lymphadenitis: 1, pseudocyst: 1...
March 11, 2017: Oncotarget
https://www.readbyqxmd.com/read/28414996/a-case-of-multiple-synchronous-quadruple-cancers-of-the-stomach-sigmoid-colon-rectum-and-pancreas
#19
Atsushi Nanashima, Tetsuro Tominaga, Takashi Nonaka, Kouki Wakata, Masaki Kunizaki, Shuichi Tobinaga, Yorihisa Sumida, Shigekazu Hidaka, Naoe Kinoshita, Terumitsu Sawai, Takeshi Nagayasu
INTRODUCTION: Multiple primary neoplasms are relatively rare, but their incidence has increased because of aging and improvements in diagnostic imaging. PRESENTATION OF CASE: A 67-year-old man presented with epigastric pain. On upper gastrointestinal endoscopy, an ulcer was seen at the gastric angle, and biopsy showed moderately differentiated adenocarcinoma (AC). Colonoscopy demonstrated a 15-mm lesion in the sigmoid colon and a submucosal lesion in the lower rectum...
April 2, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28374260/is-there-a-role-for-near-infrared-technology-in-laparoscopic-resection-of-pancreatic-neuroendocrine-tumors-results-of-the-colpan-colour-and-resect-the-pancreas-study
#20
Salvatore Paiella, Matteo De Pastena, Luca Landoni, Alessandro Esposito, Luca Casetti, Marco Miotto, Marco Ramera, Roberto Salvia, Erica Secchettin, Deborah Bonamini, Gessica Manzini, Mirko D'Onofrio, Giovanni Marchegiani, Claudio Bassi
BACKGROUND: The intraoperative identification of pancreatic neuroendocrine tumors (PanNETs) is of utmost importance to drive their laparoscopic resection. Near-infrared (NIR) surgery has emerged as a new technique for localizing tumors or neoplastic tissue. This study aimed to explore the results of the application of NIR in the laparoscopic resection of PanNETs. METHODS: Per protocol we enrolled ten subjects undergoing laparoscopic pancreatic surgery for PanNET from March 2016 to October 2016...
April 3, 2017: Surgical Endoscopy
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