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Intestinal neuroendocrine tumors

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https://www.readbyqxmd.com/read/29155309/prognostic-utility-of-total-68-ga-dotatate-avid-tumor-volume-in-patients-with-neuroendocrine-tumors
#1
Amit Tirosh, Georgios Z Papadakis, Corina Millo, Dima Hammoud, Samira M Sadowski, Peter Herscovitch, Karel Pacak, Stephen J Marx, Lily Yang, Pavel Nockel, Jasmine Shell, Patience Green, Xavier M Keutgen, Dhaval Patel, Naris Nilubol, Electron Kebebew
BACKGROUND & AIMS: Survival times vary among patients with neuroendocrine tumors (NETs)-even among those with the same site, stage, and grade of primary tumor. This makes it difficult to select treatment for patients with unresectable NETs, because some patients can survive decades without treatment. (68)Gallium-DOTATATE positron emission tomography with computed tomography ((68)Ga-DOTATATE PET/CT) is a sensitive imaging technique for detection of NETs. We investigated the prognostic accuracy of (68)Ga-DOTATATE PET/CT analysis of tumor volume in patients with NETs...
November 16, 2017: Gastroenterology
https://www.readbyqxmd.com/read/29137096/synchronous-multiple-carcinoma-with-small-intestine-and-pulmonary-neuroendocrine-involvement-a-case-report
#2
Binbin Shan, Quanmao Zhang, Yuan Li, Fucai Han
RATIONALE: In clinical work, neuroendocrine synchronous multiplicity carcinoma was relatively rare. Most were confirmed by the pathological diagnosis of a certain part of the body combined with the imaging of the whole body, while cases that had both pathological and immunohistochemistry diagnosis were few. PATIENT CONCERNS: A patient who presented with abdominal pain visited our hospital, and was diagnosed with lesions in both the small intestine and lung. DIAGNOSES: Both were considered primary tumors by imaging, and diagnosed as neuroendocrine carcinomas by pathology...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29136686/-clinicopathologic-and-molecular-characteristics-of-malignant-gastrointestinal-neuroectodermal-tumors
#3
M Zhao, T W Zhao, J Ma, C Y Wu, L Chen, G Q Ru, X L He
Objective: To investigate the clinicopathologic and molecular characteristics, diagnostic, differential diagnostic and prognostic features of malignant gastrointestinal neuroectodermal tumor. Methods: Two cases of malignant gastrointestinal neuroectodermal tumor were retrieved; the clinical and radiologic features, histomorphology, immunophenotype, molecular genetics and prognosis were analyzed and the relevant literature reviewed. Results: Case 1 was a 57-year-old male, presented with recurrent abdominal pain and melena...
November 8, 2017: Zhonghua Bing Li Xue za Zhi Chinese Journal of Pathology
https://www.readbyqxmd.com/read/29127554/is-there-any-role-for-minimally-invasive-surgery-in-net
#4
REVIEW
M Thomaschewski, H Neeff, T Keck, H P H Neumann, T Strate, E von Dobschuetz
Neuroendocrine tumors (NET) represent the variability of almost benign lesions either secreting hormones occurring as a single lesion up to malignant lesions with metastatic potential. Treatment of NET is usually performed by surgical resection. Due to the rarity of NET, surgical treatment is mainly based on the experience and recommendations of experts and less on the basis of prospective randomized studies. In addition, the development and establishment of new surgical procedures is made more difficult by their rarity...
November 11, 2017: Reviews in Endocrine & Metabolic Disorders
https://www.readbyqxmd.com/read/29121860/pneumatosis-cystoides-intestinalis-associated-with-sunitinib-and-a-literature-review
#5
Yong Suk Lee, Jae Joon Han, Si-Young Kim, Chi Hoon Maeng
BACKGROUND: Pneumatosis cystoides intestinalis (PCI) is a rare self-limiting condition characterized by air-filled cysts within intestinal walls. Diagnosis should be prudent because it can mimic pneumoperitoneum leading to unnecessary treatment such as surgical exploration. Although various drugs including anti-neoplastic agents have been suggested as etiologies, cases related to sunitinib are sparse. Because of the rarity of this unusual side effect by sunitinib, we report the case report...
November 9, 2017: BMC Cancer
https://www.readbyqxmd.com/read/29118267/clinical-usefulness-of-18-f-fluorodeoxyglucose-positron-emission-tomography-in-the-diagnostic-algorithm-of-advanced-entero-pancreatic-neuroendocrine-neoplasms
#6
Maria Rinzivillo, Stefano Partelli, Daniela Prosperi, Gabriele Capurso, Patrizia Pizzichini, Elsa Iannicelli, Elettra Merola, Francesca Muffatti, Francesco Scopinaro, Orazio Schillaci, Matteo Salgarello, Massimo Falconi, Gianfranco Delle Fave, Francesco Panzuto
BACKGROUND: The role of (18)F-fluorodeoxyglucose positron emission tomography ((18)F-FDG PET) in the diagnostic algorithm of entero-pancreatic neuroendocrine neoplasms (EP NENs) is unclear because most available data derive from heterogeneous populations in terms of tumor biology and disease status at time of examination. The aim of this study was to determine the ability of (18)F-FDG PET to identify patients with more aggressive disease among those with advanced EP NENs. Subjects, Materials, and Methods ...
November 8, 2017: Oncologist
https://www.readbyqxmd.com/read/29118225/activity-of-entrectinib-in-a-patient-with-the-first-reported-ntrk-fusion-in-neuroendocrine-cancer
#7
Darren Sigal, Marie Tartar, Marin Xavier, Fei Bao, Patrick Foley, David Luo, Jason Christiansen, Zachary Hornby, Edna Chow Maneval, Pratik Multani
Despite advances in genomic analysis, the molecular origin of neuroendocrine tumors (NETs) is complex and poorly explained by described oncogenes. The neurotrophic TRK family, including NTRK1, 2, and 3, encode the proteins TRKA, TRKB, TRKC, respectively, involved in normal nerve development. Because NETs develop from the diffuse neuroendocrine system, we sought to determine whether NTRK alterations occur in NETs and whether TRK-targeted therapy would be effective. A patient with metastatic well-differentiated NET, likely of the small intestine, was enrolled on the STARTRK2 trial (ClinicalTrials...
November 2017: Journal of the National Comprehensive Cancer Network: JNCCN
https://www.readbyqxmd.com/read/29116005/composite-intestinal-adenoma-microcarcinoid-in-the-colon-and-rectum-a-case-series-and-historical-review
#8
Mi-Jung Kim, Eun-Jung Lee, Do Sun Kim, Doo Han Lee, Eui Gon Youk, Hyun-Jung Kim
BACKGROUND: Composite intestinal adenoma-microcarcinoid (CIAM) is a rare colorectal lesion that mostly comprises a conventional adenomatous component with a minute proportion of neuroendocrine (NE) component. Although microcarcinoids are well-recognized in the setting of chronic inflammatory disorders of the gastrointestinal tract, large intestinal microcarcinoids associated with intestinal adenoma are exceedingly rare and their clinicopathologic characteristics are yet to be elucidated...
November 7, 2017: Diagnostic Pathology
https://www.readbyqxmd.com/read/29076910/optimizing-somatostatin-receptor-imaging-in-patients-with-neuroendocrine-tumors-the-impact-of-99mtc-hynictoc-spect-spect-ct-versus-68ga-dotatate-pet-ct-upon-clinical-management
#9
Jolanta Kunikowska, Valerie Lewington, Leszek Krolicki
AIM: The presence of somatostatin receptors in neuroendocrine tumors allows visualization with radiolabeled somatostatin analogs in vivo. The aim of this prospective study was to compare somatostatin receptor imaging using Tc-HYNICTOC with Ga-DOTATATE (DOTA-DPhe1,Tyr3-octreotate) with respect to sensitivity, specificity, and impact upon clinical decision making. METHODS: Sixty-eight patients (30 men, 38 women; aged 56.4 ± 13.5 years) with disseminated, histologically proven neuroendocrine tumor were enrolled...
December 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/29069739/a-nation-wide-retrospective-epidemiological-study-of-gastroenteropancreatic-neuroendocrine-neoplasms-in-china
#10
Jin-Hu Fan, Yu-Qing Zhang, Su-Sheng Shi, Yuan-Jia Chen, Xing-Hua Yuan, Li-Ming Jiang, Shao-Ming Wang, Li Ma, Yu-Tong He, Chang-Yan Feng, Xi-Bin Sun, Qing Liu, Katrina Deloso, Yihebali Chi, You-Lin Qiao
BACKGROUND: Representative data on the gastroenteropancreatic neuroendocrine neoplasms (GEP-NENs) in Asian patients is rare, especially in China. This study aims to create a GEP-NENs profile of Chinese patients. METHODS: This was a hospital-based, nation-wide, and multi-center 10-year (2001-2010) retrospective study which collected GEP-NEN patients' information in tertiary referral hospitals. All 2010 inpatient GEP-NEN cases with confirmed pathology in the selected hospitals were included...
September 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/29049611/association-of-a-prophylactic-surgical-approach-to-stage-iv-small-intestinal-neuroendocrine-tumors-with-survival
#11
Kosmas Daskalakis, Andreas Karakatsanis, Ola Hessman, Heather C Stuart, Staffan Welin, Eva Tiensuu Janson, Kjell Öberg, Per Hellman, Olov Norlén, Peter Stålberg
Importance: Primary tumor resection and mesenteric lymph node dissection in asymptomatic patients with stage IV small intestinal neuroendocrine tumors (SI-NETs) are controversial. Objective: To determine the association of locoregional surgery (LRS) performed at diagnosis with outcomes in patients with asymptomatic SI-NETs and distant metastases. Design, Setting, and Participants: This cohort study included asymptomatic patients with stage IV SI-NETs diagnosed from January 1, 1985, through December 31, 2015, and identified using the prospective database of SI-NETs from Uppsala University Hospital, Uppsala, Sweden...
October 19, 2017: JAMA Oncology
https://www.readbyqxmd.com/read/29045525/clinical-benefit-of-systemic-treatment-in-patients-with-advanced-pancreatic-and-gastro-intestinal-neuroendocrine-tumours-according-to-esmo-mcbs-and-asco-framework
#12
L D de Hosson, L M van Veenendaal, Y Schuller, W T Zandee, W W de Herder, M E T Tesselaar, H J Klümpen, A M E Walenkamp
BackgroundAssessment of clinical benefit of systemic treatments of rare diseases including gastroenteropancreatic neuroendocrine tumors (GEP-NET) is challenging. Recently several tools have been developed to grade clinical benefit of cancer drugs. European Society for Medical Oncology (ESMO) has developed the ESMO Magnitude of Clinical Benefit Scale (ESMO-MCBS). The American Society of Clinical Oncology (ASCO) developed and revised the ASCO framework consisting of the Net Health Benefit (NHB) score juxtaposed against the costs of the treatment...
September 26, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/29032398/analysis-of-mir-96-and-mir-133a-expression-in-gastrointestinal-neuroendocrine-neoplasms
#13
Rakesh Mandal, Heather Hardin, Rebecca Baus, William Rehrauer, Ricardo V Lloyd
Grading of gastrointestinal neuroendocrine neoplasms (GI-NENs) relies mainly on mitotic activity and Ki-67 proliferation index. It is often difficult to predict metastatic potential of these neoplasms. Recent studies have shown that GI-NENs express a wide spectrum of microRNAs. We examined two microRNAs (miR-96 and miR-133a) that were recently identified in GI-NENs to determine if they could assist in evaluating the biological behavior of these neoplasms. A tissue microarray (TMA) was constructed with 51 primary GI-NENs, mainly from the small intestine and metastatic tumors from the same cases, including liver metastases (N = 20) and lymph node metastases (N = 33)...
December 2017: Endocrine Pathology
https://www.readbyqxmd.com/read/29016403/the-influence-of-tumor-stage-on-the-prognostic-value-of-ki-67-index-and-mitotic-count-in-small-intestinal-neuroendocrine-tumors
#14
Yu Sun, Christine Lohse, Thomas Smyrk, Timothy Hobday, Trynda Kroneman, Lizhi Zhang
Tumor cell proliferation rate determined by either Ki-67 index or mitotic count (MC) has shown to be a prognostic factor for gastrointestinal neuroendocrine tumors in general, and after its incorporation in the 2010 World Health Organization tumor grading system, it has become essentially mandatory in pathology reports for all gastrointestinal neuroendocrine tumors, regardless of tumor location. Nevertheless, clinical significance for the Ki-67 index or MC has not been well demonstrated in small intestinal neuroendocrine tumor (SINET), especially those without distant metastasis, the majority of which have very low proliferation rates...
October 9, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28975561/liver-transarterial-embolizations-in-metastatic-neuroendocrine-tumors
#15
REVIEW
Louis de Mestier, Magaly Zappa, Olivia Hentic, Valérie Vilgrain, Philippe Ruszniewski
The management of patients with well-differentiated neuroendocrine tumors (NET) and non-resectable liver metastases is challenging. Liver-directed transarterial embolization (TAE), transarterial chemo-embolization (TACE) and selective internal radiation therapy (SIRT) have a place of choice among other treatment modalities. However, their utilization relies on a low level of proof, due to the lack of prospective data, the absence of comparative studies and considerable heterogeneity between local practices...
October 3, 2017: Reviews in Endocrine & Metabolic Disorders
https://www.readbyqxmd.com/read/28975020/a-case-of-neuroendocrine-carcinoma-developing-from-the-broad-ligament-of-the-uterus
#16
Yui Itonaga, Masakazu Nishida, Harunobu Matsumoto, Kaei Nasu, Hisashi Narahara
Neuroendocrine carcinoma (NEC), also called small cell carcinoma or large cell carcinoma, is a rare and aggressive tumor that develops mainly in the lung and intestine. More rarely, NEC develops in gynecologic organs, with poor prognoses. We experienced a case of NEC in the broad ligament of the uterus. The patient was a 74-year-old woman with symptoms of abdominal distension and constipation. Ultrasound sonography detected an abdominal tumor larger than 10 cm. She was then admitted to our hospital. She underwent surgery under the diagnosis of ovarian cancer, but the bilateral ovaries and uterus were normal in appearance, and a tumor was developing instead from the broad ligament of the uterus...
July 3, 2017: Rare Tumors
https://www.readbyqxmd.com/read/28948801/-invagination-in-an-adult-as-a-rare-cause-of-acute-abdomen-2-case-reports
#17
J Majernik, D Bis, T Kriegler, P Hanousek, T Vltavský, V Ninger
The authors present two cases of intestinal invagination in adult patients. The first case is an 84-year-old polymorbid female patient indicated for acute surgical revision due to ileus with a finding of invagination in the sigmoid area, with no evidence of an organic cause. The second case, an 80-year-old polymorbid female patient, was indicated for acute surgical revision also due to ileus with a finding of invagination on the small intestine and with a proven neuroendocrine tumor. Unlike invagination in childhood where its cause is usually unknown[1,7], intestinal invagination is relatively rare in adults and it is mostly due to an organic cause, most frequently a benign tumor of the small intestine[2]...
2017: Rozhledy V Chirurgii: Měsíčník Československé Chirurgické Společnosti
https://www.readbyqxmd.com/read/28931291/-malignant-tumors-of-the-small-bowel
#18
L Němec, P Fabian, J Tomášek, J Jarkovský, R Šefr, L Fiala
INTRODUCTION: Malignant tumors of the small bowel are relatively uncommon neoplasms; their incidence is around 1.5 per 100,000 inhabitants in the Czech Republic. METHOD: 104 patients underwent a resection of the small bowel because of a primary or secondary tumor over the 10-year period between 20062015 at the Masaryk Memorial Cancer Institute. Data from these patients was reviewed retrospectively. Survival rates were analyzed using the Kaplan-Meier method. RESULTS: We observed 45 primary and 59 secondary tumors...
2017: Rozhledy V Chirurgii: Měsíčník Československé Chirurgické Společnosti
https://www.readbyqxmd.com/read/28910819/mechanisms-of-targeting-the-mdm2-p53-foxm1-axis-in-well-differentiated-intestinal-neuroendocrine-tumors
#19
Irina Grass, Franziska Briest, Dagmar Sedding, Markus Möbs, Friederike Christen, Joana Benecke, Karolin Fuchs, Daniel Kaemmerer, Stefanie Mende, Jörg Sänger, Almut Kunze, Christina Geisler, Helma Freitag, Florentine Lewens, Lina Worpenberg, Sara Iwaszkiewicz, Britta Siegmund, Wolfgang Walther, Michael Hummel, Patricia Grabowski
<br>Background/Aims: The tumor suppressor p53 is rarely mutated in gastroenteropancreatic neuroendocrine neoplasms (GEP-NEN) but they frequently show a strong expression of p53 negative regulators, rendering these tumors excellent targets for a p53 recovery therapy. Therefore, we analyzed the mechanisms of a p53 recovery therapy on intestinal neuroendocrine tumors in vitro and in vivo. METHODS: By western blot and immunohistochemistry, we found that in GEP-NEN biopsy material overexpression of MDM2 was present in intestinal NEN...
September 14, 2017: Neuroendocrinology
https://www.readbyqxmd.com/read/28904734/a-17-year-old-male-with-a-small-bowel-neuroendocrine-tumor-flushing-differential-diagnosis
#20
Maria Alejandra Forero Molina, Elizabeth Garcia, Deyanira Gonzalez-Devia, Rafael García-Duperly, Alonso Vera
BACKGROUND: Neuroendocrine tumors (NETs) are heterogeneous neoplasms that originate from cells with a secretory function. Small bowel NETs (SB-NETs) are related to serotonin hypersecretion which causes: flushing, diarrhea, abdominal pain, bronchoconstriction and heart involvement, also known as carcinoid syndrome (CS). CS can be confused with an allergic reaction and thus should be considered as a differential diagnosis in the allergy consult. We present the case of a pediatric patient initially referred under the suspicion of food allergies...
2017: World Allergy Organization Journal
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