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Pancreatic neoplasms

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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/28802775/catastrophic-antiphospholipid-syndrome-caps-induced-ischemic-pancreatic-ducts-injury-mimicking-intraductal-papillary-mucinous-neoplasm-ipmn
#3
Léa Savey, Jean-Charles Piette, Jérome Bellanger, Laurent Palazzo, Zahir Amoura, Alain Sauvanet, Jean-François Pouget-Abadie, Philippe Sogni, Joseph Emmerich, Nathalie Costedoat-Chalumeau
OBJECTIVES: Catastrophic antiphospholipid syndrome (CAPS) is a life-threatening disease characterized by multiple small-vessel occlusions of rapid onset. Ischemic pancreatic duct lesions secondary to CAPS have never been reported. METHODS: We describe 4 patients who presented lesions suspected to be intraductal papillary mucinous neoplasm (IPMN) of the pancreas following a CAPS. RESULTS: All patients had a history of CAPS months or years before the IPMN diagnosis...
July 10, 2017: Seminars in Arthritis and Rheumatism
https://www.readbyqxmd.com/read/28802095/the-diagnostic-utility-of-merkel-cell-polyomavirus-immunohistochemistry-in-a-fine-needle-aspirate-of-metastatic-merkel-cell-carcinoma-of-unknown-primary-to-the-pancreas
#4
Long Li, Kyle Molberg, Naga Cheedella, Joel Thibodeaux, Stacy Hinson, Elena Lucas
Merkel cell carcinoma (MCC) is an aggressive skin tumor with a high tendency for metastases. We report a case of MCC initially presenting as axillary and pancreatic metastases. A 33-year-old HIV-positive Hispanic male presented with a history of a rapidly growing axillary mass. A needle core biopsy demonstrated an epithelioid neoplasm composed of small to medium-sized cells with high nuclear-cytoplasmic ratio, nuclear molding, and frequent mitotic figures. A subsequent PET scan revealed a 1.5 cm FDG avid mass in the pancreas...
August 12, 2017: Diagnostic Cytopathology
https://www.readbyqxmd.com/read/28801818/-branch-duct-intraductal-papillary-mucinous-neoplasm-surgical-approach
#5
REVIEW
J Kaiser, M W Büchler, T Hackert
Due to increasing precision of modern imaging modalities, intraductal papillary mucinous neoplasms (IPMN) of the pancreas are found with increasing prevalence. Despite their malignant potential IPMN are often kept under surveillance and are not immediately resected. The 2012 International Consensus Guidelines of Fukuoka have been widely accepted for the management of IPMN. They recommend surgical resection for branch duct IPMN with "high risk stigmata", while branch duct IPMN with "worrisome features" should undergo observation without immediate resection...
August 11, 2017: Der Chirurg; Zeitschrift Für Alle Gebiete der Operativen Medizen
https://www.readbyqxmd.com/read/28782747/laparoscopic-surgery-for-solitary-insulinoma-in-the-absence-of-ious
#6
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/28776576/gnas-mutations-in-primary-mucinous-and-non-mucinous-lung-adenocarcinomas
#7
Lauren L Ritterhouse, Marina Vivero, Mari Mino-Kenudson, Lynette M Sholl, A John Iafrate, Valentina Nardi, Fei Dong
GNAS mutations have been described in mucinous and non-mucinous epithelial neoplasms of the appendix, pancreas, and colon, with hotspot GNAS mutations found in up to two-thirds of pancreatic intraductal papillary mucinous neoplasms. Additionally, many GNAS-mutated tumors have concurrent mutations in the Ras/Raf pathway. The clinicopathologic features of GNAS-mutated lung carcinomas, however, have not yet been characterized. Primary lung carcinomas from Brigham and Women's Hospital (n=1282) or Massachusetts General Hospital (n=1070) were genotyped on a targeted massively parallel sequencing panel of oncogenes and tumor suppressor genes including GNAS...
August 4, 2017: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/28776573/pancreatic-intraductal-tubulopapillary-neoplasm-is-genetically-distinct-from-intraductal-papillary-mucinous-neoplasm-and-ductal-adenocarcinoma
#8
Olca Basturk, Michael F Berger, Hiroshi Yamaguchi, Volkan Adsay, Gokce Askan, Umesh K Bhanot, Ahmet Zehir, Fatima Carneiro, Seung-Mo Hong, Giuseppe Zamboni, Esra Dikoglu, Vaidehi Jobanputra, Kazimierz O Wrzeszczynski, Serdar Balci, Peter Allen, Naoki Ikari, Shoko Takeuchi, Hiroyuki Akagawa, Atsushi Kanno, Tooru Shimosegawa, Takanori Morikawa, Fuyuhiko Motoi, Michiaki Unno, Ryota Higuchi, Masakazu Yamamoto, Kyoko Shimizu, Toru Furukawa, David S Klimstra
Intraductal tubulopapillary neoplasm is a relatively recently described member of the pancreatic intraductal neoplasm family. The more common member of this family, intraductal papillary mucinous neoplasm, often carries genetic alterations typical of pancreatic infiltrating ductal adenocarcinoma (KRAS, TP53, and CDKN2A) but additionally has mutations in GNAS and RNF43 genes. However, the genetic characteristics of intraductal tubulopapillary neoplasm have not been well characterized. Twenty-two intraductal tubulopapillary neoplasms were analyzed by either targeted next-generation sequencing, which enabled the identification of sequence mutations, copy number alterations, and selected structural rearrangements involving all targeted (≥300) genes, or whole-exome sequencing...
August 4, 2017: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/28770404/validation-of-the-american-gastroenterological-association-guidelines-on-management-of-intraductal-papillary-mucinous-neoplasms-more-than-5%C3%A2-years-of-follow-up
#9
Koh Imbe, Naoyoshi Nagata, Yuya Hisada, Yusuke Takasaki, Katsunori Sekine, Saori Mishima, Akihito Kawazoe, Tsuyoshi Tajima, Takuro Shimbo, Mikio Yanase, Junichi Akiyama, Kazuma Fujimoto, Naomi Uemura
OBJECTIVES: Recent guidelines suggest that imaging surveillance be conducted for 5 years for patients with at most one high-risk feature. If there were no significant changes, surveillance is stopped. We sought to validate this follow-up strategy. METHODS: In study 1, data were analysed for 392 patients with intraductal papillary mucinous neoplasms (IPMNs) and at most one high-risk feature who were periodically followed up for more than 1 year with imaging tests...
August 2, 2017: European Radiology
https://www.readbyqxmd.com/read/28767289/deleterious-germline-mutations-in-patients-with-apparently-sporadic-pancreatic-adenocarcinoma
#10
Koji Shindo, Jun Yu, Masaya Suenaga, Shahriar Fesharakizadeh, Christy Cho, Anne Macgregor-Das, Abdulrehman Siddiqui, P Dane Witmer, Koji Tamura, Tae Jun Song, Jose Alejandro Navarro Almario, Aaron Brant, Michael Borges, Madeline Ford, Thomas Barkley, Jin He, Matthew J Weiss, Christopher L Wolfgang, Nicholas J Roberts, Ralph H Hruban, Alison P Klein, Michael Goggins
Purpose Deleterious germline mutations contribute to pancreatic cancer susceptibility and are well documented in families in which multiple members have had pancreatic cancer. Methods To define the prevalence of these germline mutations in patients with apparently sporadic pancreatic cancer, we sequenced 32 genes, including known pancreatic cancer susceptibility genes, in DNA prepared from normal tissue obtained from 854 patients with pancreatic ductal adenocarcinoma, 288 patients with other pancreatic and periampullary neoplasms, and 51 patients with non-neoplastic diseases who underwent pancreatic resection at Johns Hopkins Hospital between 2000 and 2015...
August 2, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28765340/lack-of-association-for-reported-endocrine-pancreatic-cancer-risk-loci-in-the-pandora-consortium
#11
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
#12
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/28762074/the-oral-microbiota-in-patients-with-pancreatic-cancer-patients-with-ipmns-and-controls-a-pilot-study
#13
Sara H Olson, Jaya Satagopan, Youming Xu, Lilan Ling, Siok Leong, Irene Orlow, Amethyst Saldia, Peter Li, Pamela Nunes, Vincent Madonia, Peter J Allen, Eileen O'Reilly, Eric Pamer, Robert C Kurtz
PURPOSE: Poor oral health appears to be a risk factor for pancreatic cancer, possibly implicating the oral microbiota. In this pilot study, we evaluated the characteristics of the oral microbiota in patients with pancreatic ductal adenocarcinoma (PDAC), intraductal papillary mucinous neoplasms (IPMN), and healthy controls. METHODS: Forty newly diagnosed PDAC patients, 39 IPMN patients, and 58 controls, excluding current smokers and users of antibiotics, provided saliva samples...
July 31, 2017: Cancer Causes & Control: CCC
https://www.readbyqxmd.com/read/28760237/pancreatic-imaging
#14
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/28754856/overexpression-of-mir-135b-5p-promotes-unfavorable-clinical-characteristics-and-poor-prognosis-via-the-repression-of-sfrp4-in-pancreatic-cancer
#15
Xu Han, Hexige Saiyin, Junjie Zhao, Yuan Fang, Yefei Rong, Chenye Shi, Wenhui Lou, Tiantao Kuang
Pancreatic ductal adenocarcinoma (PDAC) is a highly aggressive and malignant neoplasm. The aberrant expression of miR-135b-5p and secreted frizzled-related protein 4 (SFRP4) has been revealed to be involved in various cancers. However, the clinical significance of miR-135b-5p and that of its potential target SFRP4 in PDAC remain to be elucidated. Here, we found that miR-135b-5p was markedly upregulated in pancreatic cancer tissue compared with corresponding adjacent normal tissue, whereas SFRP4 was significantly downregulated...
July 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/28752676/fine-needle-aspiration-findings-of-a-rare-hematopoietic-neoplasm-presenting-as-obstructive-jaundice
#16
Jessica Tracht, Ali M Ahmed, Frida Rosenblum Donath
A 51-year-old female who presented with obstructive jaundice was found to have masses in the pancreatic head and tail as well as suspicious liver and periaortic masses on imaging. Aspiration cytology of the pancreatic tail mass showed abundant large single cells with vacuolated eosinophilic cytoplasm, marked nuclear pleomorphism, large bizarre irregular nuclei, binucleation, and prominent nucleoli. Numerous cells also showed intracytoplasmic black to brown pigmentation. A cell block was obtained and extensive immunohistochemical staining was performed...
July 27, 2017: Diagnostic Cytopathology
https://www.readbyqxmd.com/read/28739499/primary-signet-ring-stromal-tumor-of-the-testis-a-study-of-13-cases-indicating-their-phenotypic-and-genotypic-analogy-to-pancreatic-solid-pseudopapillary-neoplasm
#17
Kvetoslava Michalova, Michael Michal, Dmitry V Kazakov, Monika Sedivcova, Ondrej Hes, Ladislav Hadravsky, Abbas Agaimy, Maria Tretiakova, Carlos Bacchi, Arndt Hartmann, Naoto Kuroda, Stela Bulimbasic, Marijana Coric, Tatjana Antic, Michal Michal
Primary signet ring stromal tumor of the testis (PSRSTT) is an extremely rare tumor described only twice in the literature. Pancreatic-analogue solid pseudopapillary neoplasm (SPN) of the testis is a recently reported entity with morphological overlap with PSRSTT. We reviewed our files to find all cases of PSRSTT in order to better characterize this entity. We studied 13 cases of PSRSTTs using histological, immunohistochemical (IHC) and molecular genetic methods and compared the results with pancreatic SPN...
July 21, 2017: Human Pathology
https://www.readbyqxmd.com/read/28739282/long-term-risk-of-pancreatic-malignancy-in-patients-with-branch-duct-intraductal-papillary-mucinous-neoplasm-in-a-referral-center
#18
Ilaria Pergolini, Klaus Sahora, Cristina R Ferrone, Vicente Morales-Oyarvide, Brian M Wolpin, Lorelei A Mucci, William R Brugge, Mari Mino-Kenudson, Manuel Patino, Dushyant V Sahani, Andrew L Warshaw, Keith D Lillemoe, Carlos Fernández-Del Castillo
BACKGROUND & AIMS: Little is known about development of branch duct intraductal papillary mucinous neoplasms (BD-IPMNs). We evaluated long-term outcomes of a large cohort of patients with BD-IPMNs to determine risk of malignancy and define a subset of low-risk BD-IPMNs. METHODS: We performed a retrospective analysis of data from 577 patients with suspected or presumed BD-IPMN under surveillance at the Massachusetts General Hospital. Patients underwent cross-sectional imaging analysis at 3 months or later after their initial diagnosis...
July 21, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28739154/prostaglandin-e2-a-pancreatic-fluid-biomarker-of-intraductal-papillary-mucinous-neoplasm-dysplasia
#19
Michele T Yip-Schneider, Rosalie A Carr, Huangbing Wu, C Max Schmidt
BACKGROUND: With the increased frequency of diagnostic imaging, pancreatic cysts are now detected in >3% of American adults. Most of these are intraductal papillary mucinous neoplasm (IPMN) with well-established but variable malignant potential. A biomarker that predicts malignant potential or dysplastic grade would help determine which IPMN require removal or can be safely observed. We previously reported that pancreatic fluid prostaglandin E2 (PGE2) levels may have promise as a predictor of IPMN dysplasia and seek to validate these results in the current study...
July 21, 2017: Journal of the American College of Surgeons
https://www.readbyqxmd.com/read/28736631/shifting-paradigm-of-developing-biologics-for-the-treatment-of-pancreatic-adenocarcinoma
#20
REVIEW
Ying Zeng, Agnieszka A Rucki, Xu Che, Lei Zheng
Pancreatic adenocarcinoma is still widely considered as a deadly disease even though there are substantial therapeutic developments in the past decade. Using combinational chemotherapy regimens, represented by gemcitabine plus nab-paclitaxel and FOLFIRINOX, was able to improve overall survival in patients with advanced disease to a limited extent. It has been a challenge to develop targeted therapies that are focused on the neoplasm cells of pancreatic adenocarcinoma. Recently, targeting the stroma and immune compartments of pancreatic adenocarcinoma has shown promising results...
June 2017: Journal of Gastrointestinal Oncology
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