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Pancreatic neuroendocrin neoplasm

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https://www.readbyqxmd.com/read/28807337/evaluation-of-cd43-expression-in-non-hematopoietic-malignancies
#1
Bjorn H Batdorf, Steven H Kroft, Paul R Hosking, Alexandra M Harrington, Alexander C Mackinnon, Horatiu Olteanu
OBJECTIVES: CD43 is normally expressed only on the surface of leukocytes, and is considered a sensitive and specific marker for hematologic malignancies. As such, it may have diagnostic utility in confirming hematolymphoid lineage in cases that are negative for CD45. Aberrant CD43 expression has been described in non-hematopoietic tumors, although literature data on this topic is variable and sometimes contradictory. To clarify and expand on existing literature findings, we evaluated CD43 expression by immunohistochemistry (IHC) in a large cohort (307) of non-hematopoietic neoplasms, including poorly differentiated malignancies...
August 2017: Annals of Diagnostic Pathology
https://www.readbyqxmd.com/read/28803235/18f-fdg-uptake-in-well-differentiated-neuroendocrine-tumors-correlates-with-both-ki-67-and-vhl-pathway-inactivation
#2
Margot Bucau, Astrid Laurent-Bellue, Nicolas Poté, Olivia Hentic, Jérôme Cros, Nidaa Mikail, Vinciane Rebours, Philippe Ruszniewski, Rachida Lebtahi, Anne Couvelard
<br>Introduction: 18FDG PET-scanner positivity correlates with poor prognosis in neuroendocrine neoplasms (NEN). Glucose transporter 1 (GLUT1) and carbonic anhydrase 9 (CA9) are markers of agressivity in tumors. Together with pVHL, they are involved in tumor cell metabolism via the hypoxia-inducible factor (HIF) signaling pathway. The aim of this study was to compare, in a series of well-differentiated neuroendocrine tumors (NET), the 18-FDG uptake and expression of proliferation marker Ki-67, GLUT-1, CA9 and pVHL...
August 11, 2017: Neuroendocrinology
https://www.readbyqxmd.com/read/28782747/laparoscopic-surgery-for-solitary-insulinoma-in-the-absence-of-ious
#3
Abhay Narendra Dalvi, Mahadeo Namdeo Garale, Yogesh Prabhakar Takalkar, Sameer Ashok Rege, Pinky Manoharlal Thapar, Lila Anurag, Nalini Samir Shah
BACKGROUND: Insulinomas are the most common pancreatic neuroendocrine neoplasms. In spite of adequate pre-operative localisation, conventional surgical methods rely on intraoperative palpation. Intraoperative ultrasonography (IOUS) is said to aid in accurate localisation, decreases morbidity. Laparoscopic removal of pancreatic endocrine neoplasms is beneficial due to magnification and minimal invasion; however, in the absence of IOUS, error of judgement may lead to conversion to open surgery, thereby relying on 'palpation method' to localise the tumour...
August 1, 2017: Journal of Minimal Access Surgery
https://www.readbyqxmd.com/read/28765340/lack-of-association-for-reported-endocrine-pancreatic-cancer-risk-loci-in-the-pandora-consortium
#4
Daniele Campa, Ofure Obazee, Manuela Pastore, Francesco Panzuto, Valbona Liço, William Greenhalf, Verena Katzke, Francesca Tavano, Eithne Costello, Vincenzo Corbo, Renata Talar-Wojnarowska, Oliver Strobel, Carlo Federico Zambon, John P Neoptolemos, Giulia Zerboni, Rudolf Kaaks, Timothy J Key, Carlo Lombardo, Krzysztof Jamroziak, Domenica Gioffreda, Thilo Hackert, Kay-Tee Khaw, Stefano Landi, Anna Caterina Milanetto, Luca Landoni, Rita T Lawlor, Franco Bambi, Felice Pirozzi, Daniela Basso, Claudio Pasquali, Gabriele Capurso, Federico Canzian
Background: Pancreatic neuroendocrine tumors (PNETs) are rare neoplasms for which very little is known about either environmental or genetic risk factors. Only a handful of association studies have been performed so far, suggesting a small number of risk loci.Methods: To replicate the best findings, we have selected 16 SNPs suggested in previous studies to be relevant in PNET etiogenesis. We genotyped the selected SNPs (rs16944, rs1052536, rs1059293, rs1136410, rs1143634, rs2069762, rs2236302, rs2387632, rs3212961, rs3734299, rs3803258, rs4962081, rs7234941, rs7243091, rs12957119, and rs1800629) in 344 PNET sporadic cases and 2,721 controls in the context of the PANcreatic Disease ReseArch (PANDoRA) consortium...
August 2017: Cancer Epidemiology, Biomarkers & Prevention
https://www.readbyqxmd.com/read/28764742/pancreatic-gangliocytic-paraganglioma-harboring-lymph-node-metastasis-a-case-report-and-literature-review
#5
Keisuke Nonaka, Yoko Matsuda, Akira Okaniwa, Atsuko Kasajima, Hironobu Sasano, Tomio Arai
BACKGROUND: Gangliocytic paraganglioma (GP) is a rare neuroendocrine neoplasm, which occurs mostly in the periampullary portion of the duodenum; the majority of the reported cases of duodenal GP has been of benign nature with a low incidence of regional lymph node metastasis. GP arising from the pancreas is extremely rare. To date, only three cases have been reported and its clinical characteristics are largely unknown. CASE PRESENTATION: A nodule located in the pancreatic head was incidentally detected in an asymptomatic 68-year-old woman...
August 2, 2017: Diagnostic Pathology
https://www.readbyqxmd.com/read/28760237/pancreatic-imaging
#6
REVIEW
Mark Masciocchi
Imaging of the endocrine pancreas is dominated by neuroendocrine tumors, a diverse category of neoplasms that may or may not cause symptoms from hormone hypersecretion. These tumors may also be evidence of several different genetic syndromes. Understanding the usefulness of different imaging modalities and entities that simulate neuroendocrine tumors is key for both radiologists and referring physicians.
September 2017: Endocrinology and Metabolism Clinics of North America
https://www.readbyqxmd.com/read/28733877/expanding-the-spectrum-of-colonic-manifestations-in-tuberous-sclerosis-l-cell-neuroendocrine-tumor-arising-in-the-background-of-rectal-pecoma
#7
David L Kolin, Kai Duan, Bo Ngan, J Ted Gerstle, Monika K Krzyzanowska, Gino R Somers, Ozgur Mete
Tuberous sclerosis complex (TSC) is an autosomal dominant neurocutaneous condition that predisposes to numerous proliferative lesions, including perivascular epithelioid cell tumors (PEComas), such as lymphangioleiomyomatosis (LAM) and angiomyolipomas, and rare neuroendocrine neoplasms. We describe herein a TSC2-harboring tuberous sclerosis patient manifesting with a synchronous well-differentiated L-cell rectal neuroendocrine tumor and leiomyomatosis-like LAM of the rectum. The background large bowel wall was thickened by confluent nodular areas comprising vessels and spindle-to-epithelioid cells, which are immunoreactive for myoid (smooth muscle actin, muscle specific actin, and desmin) and melanocytic markers (HMB45, Melan-A, microphthalmia transcription factor, and CD117)...
July 21, 2017: Endocrine Pathology
https://www.readbyqxmd.com/read/28732381/lymph-node-ratio-but-not-the-total-number-of-examined-lymph-nodes-or-lymph-node-metastasis-is-a-predictor-of-overall-survival-for-pancreatic-neuroendocrine-neoplasms-after-surgical-resection
#8
Peng Liu, Xianbin Zhang, Yuru Shang, Lili Lu, Fei Cao, Min Sun, Zhaohui Tang, Brigitte Vollmar, Peng Gong
AIM: To evaluate the prognostic significance of lymph node metastasis, extent of examined lymph nodes (ELNs) and lymph node ratio (LNR) for resected pancreatic neuroendocrine neoplasms (pNENs). MATERIALS AND METHODS: Surgically resected pNENs were assimilated from the Surveillance, Epidemiology, and End Results database. Kaplan-Meier and Cox proportional hazard models were used to examine the prognostic effect of clinicopathological characteristics on overall survival; Harrell's concordance index was performed to assess the prognostic accuracy of all independent prognostic factors; and the Spearman's rank correlation was used to assess the correlation between LNR and other clinicopathological characteristics...
July 12, 2017: Oncotarget
https://www.readbyqxmd.com/read/28728148/the-role-of-cytotoxic-chemotherapy-in-advanced-pancreatic-neuroendocrine-tumors
#9
Sebastian Krug, Thomas M Gress, Patrick Michl, Anja Rinke
BACKGROUND: Pancreatic neuroendocrine tumors (PNETs) are rare neoplasms accounting for less than 5% of all pancreatic malignancies. These tumors are characterized by clinical and prognostical heterogeneity and are predominantly diagnosed in a metastatic stage. Cytotoxic chemotherapy, along with alkylating agents and antimetabolites as well as molecular targeted agents (everolimus, sunitinib), is used in the treatment of advanced PNETs. After the approval of lanreotide for unresectable PNETs, an additional therapeutic option has become available; however, the best sequence of therapies and patient stratification to different treatments remains challenging...
July 21, 2017: Digestion
https://www.readbyqxmd.com/read/28724304/synchronous-intraductal-papillary-mucinous-neoplasm-and-a-pancreatic-neuroendocrine-tumor-more-than-a-coincidence
#10
Juliana M Costa, Sofia Carvalho, João B Soares
Although the association between intraductal papillary mucinous neoplasm of the pancreas (IPMN) and pancreatic neuroendocrine tumor (PNET) has been increasingly reported, whether this association is real or coincidence remains unclear. We report a case of synchronous IPMN and a PNET which were diagnosed preoperatively and discuss the tumorigenesis, clinicopathological features and management of these rare tumors based on the published literature. A 56-year-old male was incidentally diagnosed with a 14 mm branch duct IPMN and a 3...
July 14, 2017: Revista Española de Enfermedades Digestivas
https://www.readbyqxmd.com/read/28697137/clinical-profile-of-pancreatic-cystic-lesions-in-von-hippel-lindau-disease-a-series-of-48-patients-seen-at-a-tertiary-institution
#11
Ayush Sharma, Saurabh Mukewar, Santhi Swaroop Vege
OBJECTIVES: Little is known about the association between pancreatic cystic lesions (PCLs) with von Hippel-Lindau disease (VHLD). In this study, we describe the clinical presentation, type of PCLs, and risk for malignancy in PCLs in VHLD. METHODS: Patients given a diagnosis of both VHLD and PCLs were identified from electronic medical records at Mayo Clinic, Rochester, MN, from January 1, 2000, to January 1, 2016. Various demographic, clinical, and radiologic variables were recorded...
August 2017: Pancreas
https://www.readbyqxmd.com/read/28681158/sporadic-small-%C3%A2-20%C3%A2-mm-nonfunctioning-pancreatic-neuroendocrine-neoplasm-is-the-risk-of-malignancy-negligible-when-adopting-a-more-conservative-strategy-a-systematic-review-and-meta-analysis
#12
Claudio Ricci, Riccardo Casadei, Giovanni Taffurelli, Carlo Alberto Pacilio, Davide Campana, Valentina Ambrosini, Santini Donatella, Francesco Minni
BACKGROUND: The management of small (≤20 mm), nonfunctioning pancreatic neuroendocrine neoplasms (pNENs) remains under debate. The European Neuroendocrine Tumor Society guidelines advocate the possibility of a conservative approach. METHODS: A systematic literature search was conducted to identify all studies comparing the risk of malignancy in small pNENs with respect to large ones (>20 mm). Malignancy was defined based on the presence of nodal metastases...
July 5, 2017: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/28677005/tumor-thrombosis-a-peculiar-finding-associated-with-pancreatic-neuroendocrine-neoplasms-a-pictorial-essay
#13
REVIEW
Riccardo De Robertis, Salvatore Paiella, Nicolò Cardobi, Luca Landoni, Paolo Tinazzi Martini, Silvia Ortolani, Giulia De Marchi, Stefano Gobbo, Alessandro Giardino, Giovanni Butturini, Giampaolo Tortora, Claudio Bassi, Mirko D'Onofrio
While abutment, encasement or vessel occlusion are identified in most patients with a pancreatic tumor, tumor thrombosis is an uncommon finding. In particular, there are no description in the literature of tumor thrombosis associated with ductal adenocarcinoma, the most common pancreatic tumor. On the other hand, surgical series reveal that tumor thrombosis is associated with about 5% of pancreatic neuroendocrine neoplasms (PanNENs), and literature data suggest that this finding is frequently underreported on pre-operative imaging examinations...
July 4, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/28664429/laparoscopic-versus-open-distal-pancreatectomy-for-nonfunctioning-pancreatic-neuroendocrine-tumors-a-large-single-center-study
#14
Sang Hyup Han, In Woong Han, Jin Seok Heo, Seong Ho Choi, Dong Wook Choi, Sunjong Han, Yung Hun You
BACKGROUND: Pancreatic neuroendocrine tumors (PNETs) account for 1-2% of all pancreatic neoplasms. Nonfunctioning PNETs (NF-PNETs) account for 60-90% of all PNETs. Laparoscopic distal pancreatectomy (LDP) is becoming the treatment of choice for benign lesions in the body and tail of the pancreas. However, LDP has not yet been widely accepted as the gold standard for NF-PNETs. The purpose of this study is to evaluate the clinical and oncologic outcomes after laparoscopic versus open distal pancreatectomy (ODP) for NF-PNETs...
June 29, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28658123/sarcoidosis-mimicking-metastatic-progression-of-pancreatic-neuroendocrine-tumor-a-case-report
#15
Ivan Lolli, Elisa Stasi, Fabio Fucilli, Michele Pirrelli, Raffaele Armentano, Giovanna Campanella, Claudio Lotesoriere, Dionigi Lorusso
RATIONALE: Pancreatic neuroendocrine tumors (PNETs) account for less than 5% of all pancreatic tumors. PNETs develop from pancreatic endocrine islet cells and have a variable range of malignant potential. These neoplasms tend to have a slower growth rate than exocrine tumors and may remain undetectable for years. Achieving a correct diagnosis and staging is of key importance for the optimal management of the disease and requires experience with the disease, an accurate clinical status evaluation and a critical interpretation of the radiological findings derived from morphological and functional imaging techniques as well as an integrated multidisciplinary approach...
June 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28649475/solid-pseudopapillary-tumor-of-the-pancreas-an-unusual-cause-of-abdominal-pain
#16
Talal El Imad, Fady G Haddad, Mayurathan Kesavan, Liliane Deeb, Sherif Andrawes
Solid-pseudopapillary neoplasm (SPN) of the pancreas is a rare tumor that accounts for less than one percent of pancreatic tumors. The diagnosis could be challenging as SPN tend to manifest with nonspecific abdominal symptoms, variable radiological features, and inconsistent morphology. The cellular origin of SPN is unclear and might involve ductal, acinar and endocrine stem cells.  We report a rare case of a 27-year-old female who presented with intermittent abdominal pain for two years, associated with a decrease in appetite...
May 16, 2017: Curēus
https://www.readbyqxmd.com/read/28644861/impact-of-ki67-re-assessment-at-time-of-disease-progression-in-patients-with-pancreatic-neuroendocrine-neoplasms
#17
Francesco Panzuto, Noemi Cicchese, Stefano Partelli, Maria Rinzivillo, Gabriele Capurso, Elettra Merola, Marco Manzoni, Eugenio Pucci, Elsa Iannicelli, Emanuela Pilozzi, Michele Rossi, Claudio Doglioni, Massimo Falconi, Gianfranco Delle Fave
BACKGROUND: Although re-assessment of proliferative activity by K67 evaluation during the course of neuroendocrine neoplasms (NENs) is recommended in selected patients, its impact on patients' management is not clear due to the lack of data supporting this practice. AIM: To investigate Ki67 change at time of progressive disease (PD) in entero-pancreatic NENs (EP-NENs). PATIENTS AND METHODS: Retrospective analysis of sporadic EP-NENs which received histological re-assessment after PD once radiologically documented...
2017: PloS One
https://www.readbyqxmd.com/read/28617885/the-role-of-wireless-capsule-endoscopy-wce-in-the-detection-of-occult-primary-neuroendocrine-tumors
#18
Manuele Furnari, Andrea Buda, Gabriele Delconte, Davide Citterio, Theodor Voiosu, Giovanni Ballardini, Flaminia Cavallaro, Edoardo Savarino, Vincenzo Mazzaferro, Emanuele Meroni
BACKGROUND AND AIMS: Neuroendocrine tumors (NETs) are a heterogeneous group of neoplasms with unclear etiology that may show functioning or non-functioning features. Primary tumor localization often requires integrated imaging. The European Neuroendocrine Tumors Society (ENETS) guidelines proposed wireless-capsule endoscopy (WCE) as a possible diagnostic tool for NETs, if intestinal origin is suspected. However, its impact on therapeutic management is debated. We aimed to evaluate the yield of WCE in detecting intestinal primary tumors in patients showing liver NET metastases when first-line investigations are inconclusive...
June 2017: Journal of Gastrointestinal and Liver Diseases: JGLD
https://www.readbyqxmd.com/read/28599853/post-obstructive-cyst-formation-in-pancreas-and-cystic-acinar-transformation-are-they-same
#19
Xuchen Zhang, Hongfa Zhu, Xiu Yang, Volkan N Adsay, Dhanpat Jain
Pancreatic "acinar cell cystadenoma" (PACA) is a rare benign pancreatic cystic lesion showing acinar cell differentiation. The neoplastic nature of PACA has been questioned and its exact pathogenesis remains unclear. To investigate that acinar cell differentiation is a non-specific metaplastic phenomenon that can occur in pancreatic ductal system, especially when chronically inflamed and dilated, and doesn't necessarily imply an acinar cell neoplasm, we retrospectively analyzed cases diagnosed as PACA and cases with post-obstructive cystic dilatation of pancreatic ducts for acinar cell differentiation using immunohistochemistry for trypsin...
August 2017: Pathology, Research and Practice
https://www.readbyqxmd.com/read/28597909/diagnostic-and-therapeutic-guidelines-for-gastro-entero-pancreatic-neuroendocrine-neoplasms-recommended-by-the-polish-network-of-neuroendocrine-tumours
#20
Beata Kos-Kudła, Jolanta Blicharz-Dorniak, Janusz Strzelczyk, Agata Bałdys-Waligórska, Tomasz Bednarczuk, Marek Bolanowski, Agnieszka Boratyn-Nowicka, Małgorzata Borowska, Andrzej Cichocki, Jarosław B Ćwikła, Massimo Falconi, Wanda Foltyn, Daria Handkiewicz-Junak, Alicja Hubalewska-Dydejczyk, Barbara Jarząb, Roman Junik, Dariusz Kajdaniuk, Grzegorz Kamiński, Agnieszka Kolasińska-Ćwikła, Aldona Kowalska, Robert Król, Leszek Królicki, Maciej Krzakowski, Jolanta Kunikowska, Katarzyna Kuśnierz, Paweł Lampe, Dariusz Lange, Anna Lewczuk-Myślicka, Andrzej Lewiński, Michał Lipiński, Magdalena Londzin-Olesik, Bogdan Marek, Anna Nasierowska-Guttmejer, Sergiusz Nawrocki, Ewa Nowakowska-Duława, Joanna Pilch-Kowalczyk, Violetta Rosiek, Marek Ruchała, Lucyna Siemińska, Anna Sowa-Staszczak, Teresa Starzyńska, Katarzyna Steinhof-Radwańska, Krzysztof Sworczak, Anhelli Syrenicz, Andrzej Szawłowski, Marek Szczepkowski, Ewa Wachuła, Wojciech Zajęcki, Anna Zemczak, Wojciech Zgliczyński, Krzysztof Zieniewicz
Progress in the diagnostics and therapy of gastro-entero-pancreatic (GEP) neuroendocrine neoplasms (NEN), the published results of new randomised clinical trials, and the new guidelines issued by the European Neuroendocrine Tumour Society (ENETS) have led the Polish Network of Neuroendocrine Tumours to update the 2013 guidelines regarding management of these neoplasms. We present the general recommendations for the management of NENs, developed by experts during the Third Round Table Conference - Diagnostics and therapy of gastro-entero-pancreatic neuroendocrine neoplasms: Polish recommendations in view of current European recommenda-tions, which took place in December 2016 in Żelechów near Warsaw...
2017: Endokrynologia Polska
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