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Pancreatic neuroendocrin neoplasm

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https://www.readbyqxmd.com/read/27894508/intrapancreatic-accessory-spleen-ipas-a-single-institution-experience-and-review-of-the-literature
#1
Neal Bhutiani, Michael E Egger, Catherine A Doughtie, Elizabeth S Burkardt, Charles R Scoggins, Robert C G Martin, Kelly M McMasters
INTRODUCTION: Accessory spleens located within the pancreatic parenchyma (intrapancreatic accessory spleen, IPAS) pose a unique clinical challenge. In many cases, despite imaging and other diagnostic studies, malignancy cannot be excluded and patients are subjected to pancreatic resection. We review our experience with the presentation, diagnosis, and treatment of patients with IPAS to provide insight into improving pre-operative evaluation of these patients METHODS: A retrospective chart review identified seven patients who underwent surgical resection of an intrapancreatic spleen at University of Louisville Hospital between 2004 and 2015...
November 23, 2016: American Journal of Surgery
https://www.readbyqxmd.com/read/27875639/long-term-follow-up-of-small-pancreatic-cystic-lesions-in-liver-transplant-recipients
#2
Sirachat Vidhyarkorn, Surachate Siripongsakun, Jennifer Yu, James Sayre, Vatche M Agopian, Francisco Durazo, David S Lu
BACKGROUND: Incidental small pancreatic cystic lesions (PCLs) are often found on pre-operative imaging in patients undergoing orthotropic liver transplantation (OLT).While these are considered benign or of low malignant potential, the influence of immunosuppression after OLT may be of concern. The aim of this study was to observe the long term outcome of these small pancreatic cystic lesions (PCLs) in post OLT patients. METHODS: An institutional OLT database of 1,778 consecutive OLT patients from January 2000 to December 2010 was analyzed...
November 22, 2016: Liver Transplantation
https://www.readbyqxmd.com/read/27865287/surgical-management-of-pancreatic-neuroendocrine-tumors
#3
REVIEW
Jason B Liu, Marshall S Baker
Pancreatic neuroendocrine tumors (PNETs) are a rare, heterogeneous group of neoplasms infamous for their endocrinopathies. Up to 90% of PNETs, however, are nonfunctional and are frequently detected incidentally on axial imaging during the evaluation of vague abdominal symptoms. Surgery remains the mainstay of therapy for patients diagnosed with both functional and nonfunctional PNETs. However, the multifaceted nature of PNETs challenges treatment decision making. In general, resection is recommended for patients with acceptable perioperative risk and amenable lesions...
December 2016: Surgical Clinics of North America
https://www.readbyqxmd.com/read/27864816/giant-insulinoma-report-of-a-case-and-review-of-published-reports
#4
Kazumitsu Ueda, Tetsuro Taira, Hiroyuki Hakoda, Shoko Nakata, Shinya Okata, Takeshi Nagai, Shigeo Aoki, Hideyuki Mishima, Akihiko Sako, Tsunehiko Maruyama, Minoru Okumura
BACKGROUND: Larger insulinomas are reportedly more likely to be malignant; however, their biological behavior has not been clearly elucidated. We here report the characteristics and treatment of a giant insulinoma with local invasion and lymph node metastasis. We also review published reports concerning the clinical features of giant insulinomas and comparing their grading with that of pancreatic neuroendocrine tumors. CASE PRESENTATION: A 71-year-old man was referred to our hospital for investigation of persistent hypoglycemia...
December 2016: Surgical Case Reports
https://www.readbyqxmd.com/read/27864124/cd133-expression-in-well-differentiated-pancreatic-neuroendocrine-tumors-a-potential-predictor-of-progressive-clinical-courses
#5
Yasuhiro Sakai, Seung-Mo Hong, Soyeon An, Joo Young Kim, Denis Corbeil, Jana Karbanová, Kyoko Otani, Kohei Fujikura, Ki-Byung Song, Song Cheol Kim, Masayuki Akita, Yoshihide Nanno, Hirochika Toyama, Takumi Fukumoto, Yonson Ku, Takanori Hirose, Tomoo Itoh, Yoh Zen
The present study aimed to elucidate whether the stemness molecule, CD133, is expressed in well-differentiated pancreatic neuroendocrine tumors (PanNETs; WHO grades 1 and 2) and establish its clinical relevance using two separate cohorts. In the first series (n=178) in which tissue microarrays were available, immunohistochemistry revealed that CD133 was expressed in 14 cases (8%). CD133+ PanNETs had higher TNM stages (P<.01), more frequent lymphovascular invasion (P=.01), and higher recurrence rates (P=...
November 15, 2016: Human Pathology
https://www.readbyqxmd.com/read/27861198/digital-subtraction-of-magnetic-resonance-images-improves-detection-and-characterization-of-pancreatic-neuroendocrine-neoplasms
#6
Riccardo De Robertis, Paolo Tinazzi Martini, Sara Cingarlini, Silvia Ortolani, Giovanni Butturini, Paolo Regi, Luca Landoni, Giampaolo Tortora, Paolo Pederzoli, Mirko D'Onofrio
OBJECTIVE: The aim of this study was to evaluate the usefulness of digital image subtraction of contrast-enhanced magnetic resonance (MR) images for detection and characterization of pancreatic neuroendocrine neoplasms (PanNENs). METHODS: Magnetic resonance examinations of 50 histologically verified PanNENs were retrospectively evaluated by 2 radiologists; 50 ductal adenocarcinomas were included as a control group. Late arterial phase images and correspondent subtracted images were analyzed...
November 17, 2016: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/27859270/impact-of-pancreatectomy-on-long-term-patient-reported-symptoms-and-quality-of-life-in-recurrence-free-survivors-of-pancreatic-and-periampullary-neoplasms
#7
Jordan M Cloyd, Hop S Tran Cao, Maria Q B Petzel, Jason W Denbo, Nathan H Parker, Graciela M Nogueras-González, Joseph S Liles, Michael P Kim, Jeffrey E Lee, Jean-Nicolas Vauthey, Thomas A Aloia, Jason B Fleming, Matthew H G Katz
BACKGROUND: Long term patient-reported symptoms and quality of life (QOL) are important outcome metrics following cancer operations, but have been poorly described in patients who have previously undergone pancreatectomy. METHODS: We conducted a cross-sectional survey of recurrence-free survivors of pancreatic ductal adenocarcinoma, periampullary carcinomas, and pancreatic neuroendocrine tumors who had undergone prior pancreatectomy. QOL and symptom burden were measured using the Functional Assessment of Cancer Therapy-Hepatobiliary Questionnaire, and psychosocial distress was measured using the Hospital Anxiety and Depression Scale...
November 11, 2016: Journal of Surgical Oncology
https://www.readbyqxmd.com/read/27853048/does-combination-of-cold-and-hot-somatostatin-analogs-prolong-survival-of-patients-with-neuroendocrine-neoplasms
#8
Anna Sowa-Staszczak, Agnieszka Stefanska, Pawel Chrapczynski, Malgorzata Trofimiuk-Müldner, Miroslaw Szura, Alicja Hubalewska-Dydejczyk
A number of detected neuroendocrine neoplasms (NENs) has been on the increase due to our awareness of the NENs risk and the development of different imaging techniques. Therapy of NENs involves surgery, chemotherapy, "cold" somatostatin analogs (SSA), peptide receptor radionuclide therapy (PRRT) and kinase inhibitors in pancreatic NENs. The aim of this study is to assess the efficacy of SSA in combination with "hot" somatostatin analogs, and the survival rate of our patients with advanced NENs. Seventy nine patients with metastatic NEN and positive somatostatin receptor scintigraphy (SRS) were enrolled in the study...
November 17, 2016: Endocrine Journal
https://www.readbyqxmd.com/read/27846844/a-rare-case-with-synchronous-gastric-gastrointestinal-stromal-tumor-pancreatic-neuroendocrine-tumor-and-uterine-leiomyoma
#9
Elena Arabadzhieva, Atanas Yonkov, Sasho Bonev, Dimitar Bulanov, Ivanka Taneva, Alexandrina Vlahova, Tihomir Dikov, Violeta Dimitrova
BACKGROUND: Although gastrointestinal stromal tumors (GISTs) are the most common mesenchymal tumors of the gastrointestinal tract, they comprise less than 1% of all gastrointestinal tumors. Neuroendocrine tumors (NET) of the gastro-enteropancreatic system are also rare, representing about 2% of all gastrointestinal neoplasms. Pancreatic localization of NET is extremely uncommon-these tumors are only 1-5% of all pancreatic cancers. CASE PRESENTATION: We describe an unusual case with triple tumor localization-a gastric tumor, a formation in the pancreas, which involves the retroperitoneal space, and a uterine leiomyoma...
November 15, 2016: World Journal of Surgical Oncology
https://www.readbyqxmd.com/read/27846139/the-accessory-spleen-is-an-important-pitfall-of-68ga-dotanoc-pet-ct-in-the-workup-for-pancreatic-neuroendocrine-neoplasm
#10
Vittoria Rufini, Frediano Inzani, Antonella Stefanelli, Paola Castaldi, Germano Perotti, Annarita Cinquino, Luca Indovina, Guido Rindi
OBJECTIVE: The aim of the study was to assess the value and potential pitfalls of Ga-DOTANOC positron emission tomography/computed tomography (PET/CT) in patients with suspected pancreatic neuroendocrine neoplasms (pNEN). METHODS: Consecutive patients referred for Ga-DOTANOC PET/CT for suspected pNEN between May 1, 2011, and October 31, 2014, were retrospectively assessed. Scan data were compared with cytological/histological final diagnosis. Pancreatic neuroendocrine neoplasm detection rate was determined on per-patient and per-lesion basis...
November 11, 2016: Pancreas
https://www.readbyqxmd.com/read/27826620/surgical-management-for-non-functional-pancreatic-neuroendocrine-neoplasms-with-synchronous-liver-metastasis-a-consensus-from-the-chinese-study-group-for-neuroendocrine-tumors-csnet
#11
Kaizhou Jin, Jin Xu, Jie Chen, Minhu Chen, Rufu Chen, Ye Chen, Zhiyu Chen, Bin Cheng, Yihebali Chi, Shi-Ting Feng, Deliang Fu, Baohua Hou, Dan Huang, Heguang Huang, Qiang Huang, Jie Li, Ying Li, Houjie Liang, Rong Lin, An'an Liu, Jixi Liu, Xubao Liu, Ming Lu, Jie Luo, Gang Mai, Quanxing Ni, Meng Qiu, Chenghao Shao, Baiyong Shen, Weiqi Sheng, Jian Sun, Chunlu Tan, Huangying Tan, Qiyun Tang, Yingmei Tang, Xiaodong Tian, Danian Tong, Xiaohong Wang, Jian Wang, Jie Wang, Wei Wang, Wei Wang, Yu Wang, Zheng Wu, Ling Xue, Qiang Yan, Ning Yang, Yinmo Yang, Zhiying Yang, Xiaoyi Yin, Chunhui Yuan, Shan Zeng, Renchao Zhang, Xianjun Yu
Pancreatic neuroendocrine neoplasms (p-NENs) are slowly growing tumors with frequent liver metastasis. There is a variety of approaches to treat non-functional p-NENs with synchronous liver metastasis (LM) which complicates the determination of optimal treatment. Based on updated literature review, we discussed the treatment strategy determinants for p-NEN with LM. According to the resectability of primary tumor, the WHO 2010 grade classification and the radiological type of liver metastasis, the CSNET group reached agreements on a number of issues, including the following...
November 2016: International Journal of Oncology
https://www.readbyqxmd.com/read/27825416/clinicopathological-features-of-intraductal-pancreatic-neuroendocrine-tumors
#12
Xiao-Yan Chang, Cong-Wei Jia, Yun-Xiao Meng, Jie Chen
Objective To evaluate the clinical and pathologic characteristics of intraductal pancreatic neuroendocrine tumors (PanNETs). Methods Four cases of intraductal PanNETs were studied by light microscopy and immunohistochemistry with the analysis of morphologic features and review of relevant literatures. Results Two female patients and two male patients aged 41- 58 years were enrolled in this study. The chief complaint was abdominal pain in two patients,vomiting in one patient,and jaundice in the last patient...
October 10, 2016: Zhongguo Yi Xue Ke Xue Yuan Xue Bao. Acta Academiae Medicinae Sinicae
https://www.readbyqxmd.com/read/27816717/pancreatic-serous-cystic-neoplasms-accompanying-other-pancreatic-tumors
#13
So-Woon Kim, In Hye Song, Soyeon An, So Yeon Kim, Hyoung Jung Kim, Ki-Byung Song, Dae Wook Hwang, Sang Soo Lee, Jae Ho Byun, Dong-Wan Seo, Song Cheol Kim, Eunsil Yu, Seung-Mo Hong
Serous cystic neoplasms (SCNs) are benign cystic neoplasms that predominantly occur in the tail of the pancreas in elderly women. It is well known that patients with von Hippel-Lindau syndrome can develop SCNs and neuroendocrine tumors in the pancreas. However, our understanding on SCNs accompanying other pancreatic tumors (SCNAOPTs) is limited. We compared the clinicopathologic features of 15 surgically resected SCNAOPTs with 259 conventional SCNs. The prevalence of SCNAOPT was 5%. The SCNAOPTs were significantly smaller than conventional solitary SCNs, and they were more commonly observed in the head of the pancreas, while conventional solitary SCNs were more frequently noted in the body and tail...
November 2, 2016: Human Pathology
https://www.readbyqxmd.com/read/27807633/-pancreatic-acinar-neoplasms-comparative-molecular-characterization
#14
F Bergmann
Pancreatic acinar cell carcinomas are biologically aggressive neoplasms for which treatment options are very limited. The molecular mechanisms of tumor initiation and progression are largely not understood and precursor lesions have not yet been identified. In this study, pancreatic acinar cell carcinomas were cytogenetically characterized as well as by molecular and immunohistochemical analyses. Corresponding investigations were carried out on pancreatic ductal adenocarcinomas and pancreatic neuroendocrine neoplasms augmented by functional analyses...
November 2016: Der Pathologe
https://www.readbyqxmd.com/read/27806771/-surgical-treatment-of-pancreatic-cystic-neoplasms-follow-up-or-surgical-intervention
#15
X D Tian, Y M Yang
Pancreatic cystic neoplasm(PCN) are common and increasingly detected in recent years including serous cystic neoplasms, mucinous cystic neoplasms, intraductal papillary mucinous neoplasms, solid pseudopapillary neoplasms and cystic pancreatic neuroendocrine tumors.Some of PCN have a low risk of malignancy while others have a high risk and need interventions, even in the same type of cystic neoplasms. The management of PCN requires risk stratification for malignant potential, and clinicians should have a systematic approach for establishing a diagnosis and determining which patients require surgical treatment...
November 1, 2016: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/27798861/antiangiogenic-therapy-in-pancreatic-neuroendocrine-tumors
#16
REVIEW
Monica Capozzi, Claudia VON Arx, Chiara DE Divitiis, Alessandro Ottaiano, Fabiana Tatangelo, Giovanni Maria Romano, Salvatore Tafuto
In recent years, many progresses have been pursued in the management of advanced pancreatic neuroendocrine tumor (pNET); most of them were prompted by increasing knowledge of biology of these neoplasms, including the identification of promising biological targets for therapy. PNETs belong to a group of rare neoplastic diseases. They originate from neuroendocrine system cells and are very heterogeneous regarding anatomic localization and aggressiveness. Recently, many efforts have been particularly focused on the identification of pathologic pathways and innovative drugs in order to treat patients with unresectable, metastatic disease, in progressive well-differentiated pNETs...
October 2016: Anticancer Research
https://www.readbyqxmd.com/read/27784972/pancreatic-neuroendocrine-tumor-and-solid-pseudopapillary-neoplasm-key-immunohistochemical-profiles-for-differential-diagnosis
#17
Yusuke Ohara, Tatsuya Oda, Shinji Hashimoto, Yoshimasa Akashi, Ryoichi Miyamoto, Tsuyoshi Enomoto, Kaishi Satomi, Yukio Morishita, Nobuhiro Ohkohchi
AIM: To reveal better diagnostic markers for differentiating neuroendocrine tumor (NET) from solid-pseudopapillary neoplasm (SPN), focusing primarily on immunohistochemical analysis. METHODS: We reviewed 30 pancreatic surgical specimens of NET (24 cases) and SPN (6 cases). We carried out comprehensive immunohistochemical profiling using 9 markers: Synaptophysin, chromogranin A, pan-cytokeratin, E-cadherin, progesterone receptor, vimentin, α-1-antitrypsin, CD10, and β-catenin...
October 14, 2016: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/27781493/systematic-review-and-meta-analysis-on-laparoscopic-pancreatic-resections-for-neuroendocrine-neoplasms-pnens
#18
Domenico Tamburrino, Stefano Partelli, Claudio Renzi, Stefano Crippa, Francesca Muffatti, Carolina Perali, Amilcare Parisi, Julius Randolph, Giuseppe Kito Fusai, Roberto Cirocchi, Massimo Falconi
BACKGROUND: The safety of laparoscopic resections (LPS) of pancreatic neuroendocrine neoplasms (PNENs) has been well established in the literature. METHODS: Studies conducted between January 2003 and December 2015 that reported on LPS and open surgery (OPS) were reviewed. The primary outcomes were the rate of post-operative complications and the length of hospital stay (LoS) after laparoscopic and open surgical resection. The rate of recurrence was the secondary outcome...
October 26, 2016: Expert Review of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/27769070/characterization-of-pancreatic-glucagon-producing-tumors-and-pituitary-gland-tumors-in-transgenic-mice-overexpressing-mycn-in-hgfap-positive-cells
#19
Kathrin Fielitz, Kristina Althoff, Katleen De Preter, Julie Nonnekens, Jasmin Ohli, Sandra Elges, Wolfgang Hartmann, Günter Klöppel, Thomas Knösel, Marc Schulte, Ludger Klein-Hitpass, Daniela Beisser, Henning Reis, Annette Eyking, Elke Cario, Johannes H Schulte, Alexander Schramm, Ulrich Schüller
Amplification or overexpression of MYCN is involved in development and maintenance of multiple malignancies. A subset of these tumors originates from neural precursors, including the most aggressive forms of the childhood tumors, neuroblastoma and medulloblastoma. In order to model the spectrum of MYCN-driven neoplasms in mice, we transgenically overexpressed MYCN under the control of the human GFAP-promoter that, among other targets, drives expression in neural progenitor cells. However, LSL-MYCN;hGFAP-Cre double transgenic mice did neither develop neural crest tumors nor tumors of the central nervous system, but presented with neuroendocrine tumors of the pancreas and, less frequently, the pituitary gland...
October 19, 2016: Oncotarget
https://www.readbyqxmd.com/read/27759713/treatment-response-and-outcomes-of-grade-3-pancreatic-neuroendocrine-neoplasms-based-on-morphology-well-differentiated-versus-poorly-differentiated
#20
Nitya Raj, Emily Valentino, Marinela Capanu, Laura H Tang, Olca Basturk, Brian R Untch, Peter J Allen, David S Klimstra, Diane Reidy-Lagunes
OBJECTIVES: Emerging data suggest that not all grade 3 (G3) pancreatic neuroendocrine neoplasms (panNENs) behave the same; tumor differentiation may predict outcome. METHODS: Patients with G3 panNENs treated at our institution between 1999 and 2014 were identified. Demographics, response to therapy, and overall survival were determined. RESULTS: Forty-five patients were identified, 16 with G3 well differentiated pancreatic neuroendocrine tumors (WD-panNETs) and 29 with poorly differentiated neuroendocrine carcinomas (PDNEC)...
October 18, 2016: Pancreas
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