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https://www.readbyqxmd.com/read/29213282/determination-of-mammalian-target-of-rapamycin-hyperactivation-as-prognostic-factor-in-well-differentiated-neuroendocrine-tumors
#1
G Lamberti, C Ceccarelli, N Brighi, I Maggio, D Santini, C Mosconi, C Ricci, G Biasco, D Campana
Purpose: To evaluate the role of the activation of mTOR (phosphorylated mTOR, p-mTOR) and the expression SSTR2A and IGF-1R as prognostic factor in well-differentiated neuroendocrine tumors. Methods: A retrospective study was conducted on data from patients with diagnosis of neuroendocrine tumor originated from pancreas (pNET) or gastrointestinal tract (stomach, appendix, and ileus; GI-NET) made between January 2003 and December 2004 and followed up at our institution...
2017: Gastroenterology Research and Practice
https://www.readbyqxmd.com/read/29212165/assessment-of-pancreatic-neuroendocrine-tumor-cytologic-genotype-diversity-to-guide-personalized-medicine-using-a-custom-gastroenteropancreatic-next-generation-sequencing-panel
#2
Ferga C Gleeson, Jesse S Voss, Benjamin R Kipp, Sarah E Kerr, John S Van Arnam, John R Mills, Cherisse A Marcou, Amber R Schneider, Zheng Jin Tu, Michael R Henry, Michael J Levy
Background: Recent genetic studies have highlighted that alterations in MEN1, chromatin remodeling genes, and mammalian target of rapamycin (mTOR) pathway genes are the most frequent molecular events identified in pancreas neuroendocrine tumors (pNETs). The prognostic or predictive impact of these biomarkers and other less frequently observed aberrations, i.e. PTEN, TSC2 and PIK3CA are relatively unknown. The aims of this targeted next generation sequencing (NGS) study were to assess tumor cytology genotype diversity, to survey for potential adverse prognostic biomarkers and the prevalence of mTOR pathway variants...
November 7, 2017: Oncotarget
https://www.readbyqxmd.com/read/29207860/therapy-of-pancreatic-neuroendocrine-tumors-fine-needle-intervention-including-ethanol-and-radiofrequency-ablation
#3
REVIEW
Sundeep Lakhtakia
Pancreatic neuroendocrine tumors (PNETs) are increasingly being detected, though usually as incidental findings. Majority of the PNETs are non-functional and surgical resection is the standard of care for most of them. However, in patients with small PNETs localized within the pancreas, who are unfit or unwilling for surgery, alternate methods of treatment are needed. Direct methods of ablation of PNETs, using either ethanol injection or radiofrequency ablation (RFA), are emerging as effective methods. The limited literature available as case reports or case series on endoscopic ultrasound (EUS)-guided local ablation using either ethanol or RFA has demonstrated safety and efficacy along with short- to medium-term sustained relief...
November 2017: Clinical Endoscopy
https://www.readbyqxmd.com/read/29207856/diagnosis-of-pancreatic-neuroendocrine-tumors
#4
REVIEW
Dong Wook Lee, Michelle Kang Kim, Ho Gak Kim
Pancreatic neuroendocrine tumors (PNETs) are relatively rare; however, the incidence has increased over the last few decades. They are classified as functional or non-functional tumors according to the presence of associated clinical symptoms. The majority are non-functional tumors. For classification and staging, the World Health Organization 2010 classification system is the most commonly accepted. Chromogranin A is the most sensitive marker but has insufficient specificity. In general, PNETs are hypervascular tumors, and multiphasic contrast-enhanced computed tomography is considered the first choice for imaging study...
November 2017: Clinical Endoscopy
https://www.readbyqxmd.com/read/29207714/paediatric-peripheral-primitive-neuroectodermal-tumour-a-clinico-pathological-study-from-southern-india
#5
Rithika Rajendran, Leena Dennis Joseph, Thanka Johnson, Latha Magatha Sneha, Julius Xavier Scott, Satish Srinivasan
Introduction: Primitive Neuroectodermal Tumour (PNET)/Ewing Sarcomas (ES) are aggressive childhood malignancies with neuroectodermal differentiation. Aim: To study the clinical presentation, morphology, Immun-ohistochemistry (IHC), management and outcome of all the cases of paediatric pPNET/ES reported in our tertiary care centre over a period of six years. Materials and Methods: This was a retrospective study conducted at Sri Ramachandra Medical College and Research Institute, Chennai, India...
September 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/29191920/combined-test-of-serum-cga-and-nse-improved-the-power-of-prognosis-prediciton-of-nf-pnets
#6
Yang Lv, Xu Han, Chunyan Zhang, Yuan Fang, Ning Pu, Yuan Ji, Dansong Wang, Xuefeng Xu, Wenhui Lou
PURPOSE: Chromogranin-A (CgA) and neuron-specific enolase (NSE) are important markers for neuroendocrine tumors, however, the clinical value of combining these markers has not been well studied. In this study we investigated the utility of each marker individually and in combination for patients with nonfunctional pancreatic neuroendocrine tumors (NF-pNETs). PATIENTS AND METHODS: In this study, NF-pNETs patients and controls were recruited from December 2011 to March 2016; 784 serum samples from peripheral vein were collected...
November 30, 2017: Endocrine Connections
https://www.readbyqxmd.com/read/29188366/pre-operative-neutrophil-count-and-neutrophil-lymphocyte-count-ratio-nlcr-in-predicting-the-histological-grade-of-paediatric-brain-tumours-a-preliminary-study
#7
J R F Wilson, F Saeed, A K Tyagi, J R Goodden, G Sivakumar, D Crimmins, M Elliott, S Picton, P D Chumas
INTRODUCTION: The neutrophil-lymphocyte count ratio (NLCR) is an established prognostic marker for renal, lung and colorectal carcinomas and has been suggested to be predictive of histological grade and outcome in adult intracranial tumours. The purpose of this study was to determine whether a correlation of the pre-operative neutrophil count (NC) and NLCR with the final histological grade exists in paediatric intracranial tumours. METHODS: A retrospective analysis was undertaken at a single centre...
November 29, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/29173655/management-of-well-differentiated-gastroenteropancreatic-neuroendocrine-tumors-gepnets-a-review
#8
REVIEW
Gurleen Pasricha, Parikshit Padhi, Nour Daboul, Dulabh K Monga
PURPOSE: Neuroendocrine tumors (NETs) are heterogeneous tumors that arise from the neuroendocrine cells of the digestive tract and other organs, such as the lung, ovary, and thyroid glands. They can be well differentiated or poorly differentiated, and management of these tumors differs for each histologic subtype. We have performed a review of NETs and focused on management of well-differentiated gastroenteropancreatic neuroendocrine tumors (GEPNETs) and carcinoid syndrome. METHODS: A PubMed search was performed to obtain articles on the management of well-differentiated NETs...
November 2017: Clinical Therapeutics
https://www.readbyqxmd.com/read/29168979/prognostic-significance-of-preoperative-neutrophil-to-lymphocyte-ratio-in-surgically-resectable-pancreatic-neuroendocrine-tumors
#9
Bo Zhou, Canyang Zhan, Jingjing Wu, Jianhua Liu, Jie Zhou, Shusen Zheng
BACKGROUND The aim of this study was to evaluate the predictive and prognostic value of the preoperative neutrophil-to-lymphocyte ratio (NLR) and platelet-to-lymphocyte ratio (PLR) in pancreatic neuroendocrine tumor (PNET) patients undergoing potentially curative resection. MATERIAL AND METHODS A retrospective review of 172 patients with PNETs was conducted. Kaplan-Meier curves and multivariate Cox proportional models were used to calculate overall survival (OS) and disease-free survival (DFS). The predictive performance of the NLR was compared with other inflammation-based scores and conventional stratification systems using receiver operating characteristic (ROC) curve analysis...
November 23, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29168356/single-institution-experience-on-cancer-among-adolescents-15-19-years-of-age
#10
Begül Yağcı-Küpeli, Canan Akyüz, Bilgehan Yalçın, Ali Varan, Tezer Kutluk, Münevver Büyükpamukçu
Yağcı-Küpeli B, Akyüz C, Yalçın B, Varan A, Kutluk T, Büyükpamukçu M. Single institution experience on cancer among adolescents 15-19 years of age. Turk J Pediatr 2017; 59: 1-5. Adolescent cancers differ from other age groups in terms of cancer types, treatment and outcome. We aimed to present our institutional data on survival of certain types of cancer in adolescents. Hospital files were retrospectively evaluated for distribution of tumor types, clinical features, and overall and event-free survival (OS and EFS) rates in adolescents with malignant tumors...
2017: Turkish Journal of Pediatrics
https://www.readbyqxmd.com/read/29164297/dose-and-schedule-modification-are-required-for-long-term-continuation-of-sunitinib-in-japanese-patients-with-advanced-pancreatic-neuroendocrine-tumors
#11
Lingaku Lee, Tetsuhide Ito, Hisato Igarashi, Masami Miki, Nao Fujimori, Ken Kawabe, Robert T Jensen, Yoshihiro Ogawa
PURPOSE: This study aimed to clarify the efficacy and safety of sunitinib in Japanese patients with pancreatic neuroendocrine tumors (PNET), especially by focusing on dose and schedule modification. METHODS: Sixteen patients with advanced PNET treated with sunitinib were reviewed retrospectively. Efficacy was evaluated by progression-free survival (PFS) and objective tumor response. Toxicity profile was assessed regularly. Correlation between relative dose intensity (RDI) and treatment period was also evaluated...
November 21, 2017: Cancer Chemotherapy and Pharmacology
https://www.readbyqxmd.com/read/29163700/carbohydrate-antigen-19-9-as-a-prognostic-biomarker-in-pancreatic-neuroendocrine-tumors
#12
Guopei Luo, Kaizhou Jin, He Cheng, Chen Liu, Meng Guo, Yu Lu, Chao Yang, Jinzhi Xu, Wenquan Wang, Heli Gao, Shirong Zhang, Jiang Long, Jin Xu, Quanxing Ni, Jie Chen, Xianjun Yu
Carbohydrate antigen 19-9 (CA19-9) is not generally considered to be a biomarker in pancreatic neuroendocrine tumors (pNETs), as the majority of pNETs present with a normal range of CA19-9. The present study aimed to evaluate the role of serum CA19-9 levels as a prognostic factor in a relatively large number of patients with pNETs. Consecutive patients were retrospectively collected from a single institution between June 2006 and February 2015. The receiver operating characteristic (ROC) curve and the area under the ROC curve were used to select the cut-off values for the baseline CA19-9 levels...
December 2017: Oncology Letters
https://www.readbyqxmd.com/read/29161241/determination-of-an-optimal-response-cut-off-able-to-predict-progression-free-survival-in-patients-with-well-differentiated-advanced-pancreatic-neuroendocrine-tumours-treated-with-sunitinib-an-alternative-to-the-current-recist-defined-response
#13
Angela Lamarca, Jorge Barriuso, Matthew Kulke, Ivan Borbath, Heinz-Josef Lenz, Jean Luc Raoul, Neal J Meropol, Catherine Lombard-Bohas, James Posey, Sandrine Faivre, Eric Raymond, Juan W Valle
BACKGROUND: Sunitinib prolongs progression-free survival (PFS) in patients with advanced pancreatic neuroendocrine tumours (pNET). Response Evaluation Criteria in Solid Tumors (RECIST)-defined partial responses (PR; classically defined as ⩾30% size decrease from baseline) are infrequent. METHODS: Individual data of pNET patients from the phase II [NCT00056693] and pivotal phase III [NCT00428597] trials of sunitinib were analysed in this investigator-initiated, post hoc study...
November 21, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/29151797/late-onset-of-primary-pulmonary-primitive-neuroectodermal-tumor-a-case-report
#14
Bilgin Bahadir Başgöz, Adem Aydin, Semra Ince, Ibrahim Demirci, Ayhan Özcan
Lungs are one of most metastatic areas for primitive neuroectodermal tumor (PNET), however primary pulmonary PNET is extremely rare. Here we present a case of a 58-year-old male patient with a tumor in the right lung that originated from the lung but not from chest wall. Patient was diagnosed with PNET following histological and immunohistochemical examination of CT-guided percutaneous tru-cut needle biopsy and no distant metastasis were detected in PET-CT scan. As advised recently in published literature, surgical resection following neoadjuvant chemotherapy protocol is preferred in the treatment of our patient as it has better success of complete resection leading to higher 5-year survival rates...
2017: Clujul Medical (1957)
https://www.readbyqxmd.com/read/29150788/ck4-ck6-cyclin-d1-p16-ink4a-and-egfr-expression-in-glioblastoma-with-a-primitive-neuronal-component
#15
Guiyan Xu, Jian Yi Li
Glioblastoma with primitive neuroectodermal tumor-like component (GBM-PNET) is a rare variant of glioblastoma, which was renamed as glioblastoma with a primitive neuronal component (GBM-PN) in new WHO classification of tumours of the central nervous system in 2016. There are few publications on the investigation of GBM-PN. In this study, PCR mRNA arrays on 6 cases of conventional GBM and 10 cases of GBM-PN showed high mRNA level of CDK4 in GBM-PN and low mRNA level of EGFR in GBM-PN. Immunohistochemical stains on tissue microarrays with 28 cases of conventional GBM and 13 cases of GBM-PN demonstrated that CDK4 was selectively expressed in the primitive neuronal component of all GBM-PN cases while EGFR was positive in conventional GBM and glial component of GBM-PN, but was negative in the primitive neuronal component of all GBM-PN cases...
November 17, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/29150545/tumour-diameter-is-not-reliable-for-management-of-non-secreting-pancreatic-neuroendocrine-tumours
#16
Logan Mills, Panagiotis Drymousis, Yogesh Vashist, Christoph Burdelski, Andreas Prachalias, Parthi Srinivasan, Krishna Menon, Corina Cotoi, Saboor Khan, Judith Cave, Thomas Armstrong, Martin O Weickert, Jakob Izbicki, Joerg Schrader, Andreja Frilling, John K Ramage, Raj Srirajaskanthan
Small non-functioning pancreatic NETs (pNETs) ≤2 cm can pose a management dilemma in terms of surveillance or resection. There is evidence to suggest that a surveillance approach can be considered since there are no significant radiological changes observed in lesions during long-term follow-up. However, other studies have suggested loco-regional spread can be present in ≤2 cm pNETs. The aim of this study was to characterise the prevalence of malignant features and identify any useful predictive variables in a surgically resected cohort of pNETs...
November 2017: Endocrine Connections
https://www.readbyqxmd.com/read/29146108/pancreatectomy-for-pancreatic-incidentaloma-what-are-the-risks
#17
Morgane Bouquot, Sébastien Gaujoux, François Cauchy, David Birnbaum, Safi Dokmak, Philippe Levy, Olivier Soubrane, Alain Sauvanet
BACKGROUND: Pancreatic incidentalomas (PI) are nowadays common but the benefit-risk balance of surgery remains difficult to determine. METHODS: Monocentric retrospective study of 881 pancreatectomies comparing resected PI with symptomatic lesion. Univariate and multivariate (MV) analyses were done to identify risk factors of malignancy in PI undergoing surgery. RESULTS: Overall, 32% of pancreatectomies were performed for PI. Median size of PI was 30 mm (vs 28 mm; p = 0...
November 7, 2017: Pancreatology: Official Journal of the International Association of Pancreatology (IAP) ... [et Al.]
https://www.readbyqxmd.com/read/29145292/recurrent-spinal-primitive-neuroectodermal-tumor-with-brain-and-bone-metastases-a-case-report
#18
Frank Chen, Shyh-Shin Chiou, Sheng-Fung Lin, Ann-Shung Lieu, Yi-Ting Chen, Chih-Jen Huang
RATIONALE: Primary spinal primitive neuroectodermal tumor (PNET) is relatively rare in all age groups, and the prognosis in most cases of spinal PNETs appears to be poor, with a median patient survival of 1 to 2 years. We present a case with recurrent spinal PNET with brain and bone metastases that was successfully treated by multimodality treatment. PATIENT CONCERNS: A 14-year-old teenage girl had suffered from progressive left upper back pain with bilateral lower legs weakness and numbness for 1 year...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29140113/prediction-of-pancreatic-neuroendocrine-tumor-grade-based-on-ct-features-and-texture-analysis
#19
Rodrigo Canellas, Kristine S Burk, Anushri Parakh, Dushyant V Sahani
OBJECTIVE: The purposes of this study were to assess whether CT texture analysis and CT features are predictive of pancreatic neuroendocrine tumor (PNET) grade based on the World Health Organization (WHO) classification and to identify features related to disease progression after surgery. MATERIALS AND METHODS: Preoperative contrast-enhanced CT images of 101 patients with PNETs were assessed. The images were evaluated for tumor location, tumor size, tumor pattern, predominantly solid or cystic composition, presence of calcification, presence of heterogeneous enhancement on contrast-enhanced images, presence of pancreatic duct dilatation, presence of pancreatic atrophy, presence of vascular involvement by the tumor, and presence of lymphadenopathy...
November 15, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29136022/prognostic-significance-of-cytokeratin-19-expression-in-pancreatic-neuroendocrine-tumor-a-meta-analysis
#20
Dong Cen, Jiang Chen, Zheyong Li, Jie Zhao, Xiujun Cai
BACKGROUND: Pancreatic neuroendocrine tumor (PNET) comprises 1-2% of all pancreatic tumors, but its incidence is increasing. Although many studies have investigated the correlation between cytokeratin 19 (CK-19) and PNET, the prognostic significance of CK-19 expression in PNET is inconclusive. METHODS: Eligible studies were retrieved from Pubmed, Elsevier, Embase, Cochrane Library and Web of Science databases. All relevant data were extracted to analyze the relationship between CK-19 and PNET...
2017: PloS One
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