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Neuroendocrine tumors

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https://www.readbyqxmd.com/read/28098761/pancreatic-neuroendocrine-neoplasms-basic-biology-current-treatment-strategies-and-prospects-for-the-future
#1
REVIEW
Akihiro Ohmoto, Hirofumi Rokutan, Shinichi Yachida
Pancreatic neuroendocrine neoplasms (pNENs) are rare tumors accounting for only 1%-2% of all pancreatic tumors. pNENs are pathologically heterogeneous and are categorized into three groups (neuroendocrine tumor: NET G1, NET G2; and neuroendocrine carcinoma: NEC) on the basis of the Ki-67 proliferation index and the mitotic count according to the 2010 World Health Organization (WHO) classification of gastroenteropancreatic NENs. NEC in this classification includes both histologically well-differentiated and poorly differentiated subtypes, and modification of the WHO 2010 classification is under discussion based on genetic and clinical data...
January 13, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28098567/multiple-enlarged-lymph-nodes-in-axilla-a-case-report-of-merkel-cell-carcinoma
#2
Muatasim Noorelahi, Rana Mahmood
: We present the case of a 59-year-old man with a growing mass in his left axillary area. A biopsy and immunostainings demonstrated neuroendocrine carcinoma, which is Merkel cell carcinoma (MCC). The disease is characterised by neurosecretory granules in tumor cells. MCC is a rare entity. The disease is predominantly seen in the inguinal region or the axilla and typically found incidentally. It presents clinically as multiple lymph nodes enlargement. Yet controversy exists regarding treatment modality of MCC...
January 16, 2017: Annali Italiani di Chirurgia
https://www.readbyqxmd.com/read/28098562/primary-neuroendocrine-carcinoma-of-the-breast-a-single-center-experience-and-review-of-the-literature
#3
Paolo Locurto, Angelo Danilo Antona, Antonietta Grillo, Antonio Ciulla, Stefania Martorana, Calogero Cipolla, Giuseppa Graceffa, Salvatore Vieni
: Neuroendocrine carcinoma of the breast is an extremely rare tumor. A standard treatment has yet to be established because only a few cases have been reported in literature. The authors report five cases observed from January 2007 to December 2014 and a review of literature. Four patients underwent quadrantectomy and in two cases axillary nodal dissection and only one to mastectomy with axillary nodal dissection. Tumor size was from T1 to T2 with N0 to N1, according TNM classification...
December 6, 2016: Annali Italiani di Chirurgia
https://www.readbyqxmd.com/read/28097640/priming-increases-the-anti-tumor-effect-and-therapeutic-window-of-177-lu-octreotate-in-nude-mice-bearing-human-small-intestine-neuroendocrine-tumor-got1
#4
Johanna Dalmo, Johan Spetz, Mikael Montelius, Britta Langen, Yvonne Arvidsson, Henrik Johansson, Toshima Z Parris, Khalil Helou, Bo Wängberg, Ola Nilsson, Maria Ljungberg, Eva Forssell-Aronsson
BACKGROUND: (177)Lu-[DOTA(0), Tyr(3)]-octreotate ((177)Lu-octreotate) is used for treatment of patients with somatostatin receptor (SSTR) expressing neuroendocrine tumors. However, complete tumor remission is rarely seen, and optimization of treatment protocols is needed. In vitro studies have shown that irradiation can up-regulate the expression of SSTR1, 2 and 5, and increase (177)Lu-octreotate uptake. The aim of the present study was to examine the anti-tumor effect of a (177)Lu-octreotate priming dose followed 24 h later by a second injection of (177)Lu-octreotate compared to a single administration of (177)Lu-octreotate, performed on the human small intestine neuroendocrine tumor cell line, GOT1, transplanted to nude mice...
December 2017: EJNMMI Research
https://www.readbyqxmd.com/read/28095720/baseline-chromogranin-a-and-its-dynamics-are-prognostic-markers-in-gastroenteropancreatic-neuroendocrine-tumors
#5
Wojciech Rogowski, Ewa Wachuła, Anna Lewczuk, Agnieszka Kolesińska-Ćwikła, Ewa Iżycka-Świeszewska, Violetta Sulżyc-Bielicka, Jarosław B Ćwikła
AIM: This study assessed whether absolute chromogranin A (CgA) values at various stages of treatment have prognostic value in patients with pancreatic and midgut neuroendocrine tumors, subjected to peptide receptor radionuclide therapy with (90)Y-[DOTA(0), D-Phe(1), Tyr(3)]-octreotate. PATIENTS & METHODS: CgA was determined before peptide receptor radionuclide therapy, 6 weeks, 6, 12, 18 and 24 months after the last dose of (90)Y-[DOTA(0), D-Phe(1), Tyr(3)]-octreotate...
January 18, 2017: Future Oncology
https://www.readbyqxmd.com/read/28094897/cytology-assessment-can-predict-survival-for-patients-with-metastatic-pancreatic-neuroendocrine-neoplasms
#6
Carlie S Sigel, Huimin Guo, Keith M Sigel, Ming Zhang, Natasha Rekhtman, Oscar Lin, David S Klimstra, Achim A Jungbluth, Laura K Tang
BACKGROUND: Histological features and Ki-67 index have known usefulness in predicting prognosis and guiding therapy among patients with metastatic pancreatic neuroendocrine neoplasms. Fine-needle aspiration may offer advantages for Ki-67 assessment because the technique obtains highly cellular, well-preserved specimens with the potential for broader tumor sampling. In the current study, the authors evaluated concordance for grade and differentiation between concurrent core needle biopsy and cytology preparations...
January 17, 2017: Cancer
https://www.readbyqxmd.com/read/28094126/prevalence-of-neuroendocrine-tumors-in-patients-with-cyanotic-congenital-heart-disease
#7
Inés Ponz de Antonio, José Ruiz Cantador, Ana E González García, José María Oliver Ruiz, Ángel Sánchez-Recalde, José Luis López-Sendón
No abstract text is available yet for this article.
January 13, 2017: Revista Española de Cardiología
https://www.readbyqxmd.com/read/28093861/laparoscopic-endoscopic-cooperative-surgery-for-a-duodenal-neuroendocrine-tumor-a-case-report
#8
Yoshinobu Nagasawa, Hiroshi Okauchi, Masatsugu Kojima, Hiroshi Setoyama, Masato Hasegawa, Hiroo Mizuta, Tomoyuki Tsujikawa, Masaji Tani, Yoshimasa Kurumi
For neuroendocrine tumor G1, local resection is one of the primary treatment options. Endoscopic submucosal dissection has been proven to ensure complete resection with sufficient margins. However, duodenal endoscopic submucosal dissection has a high risk of duodenal perforation because of the thin duodenal wall and poor endoscopic maneuverability. During laparoscopic dissection, suturing can resolve perforation. Therefore, laparoscopic-endoscopic cooperative surgery (LECS) can ensure complete resection with a minimal margin to prevent stenosis, and suturing can resolve perforation...
January 17, 2017: Asian Journal of Endoscopic Surgery
https://www.readbyqxmd.com/read/28093692/a-case-of-fatal-clostridium-perfringens-bacteremia-and-sepsis-following-ct-guided-liver-biopsy-of-a-rare-neuroendocrine-hepatic-tumor
#9
Gianluca Landi, Giacomo Gualtieri, Irini Scordi Bello, Daniel Kirsch
No abstract text is available yet for this article.
January 17, 2017: Forensic Science, Medicine, and Pathology
https://www.readbyqxmd.com/read/28092495/nonhypervascular-pancreatic-neuroendocrine-tumors-differential-diagnosis-from-pancreatic-ductal-adenocarcinomas-at-mr-imaging-retrospective-cross-sectional-study
#10
Sun Kyung Jeon, Jeong Min Lee, Ijin Joo, Eun Sun Lee, Hyun Jeong Park, Jin-Young Jang, Ji Kon Ryu, Kyung Bun Lee, Joon Koo Han
Purpose To determine useful magnetic resonance (MR) imaging features to differentiate nonhypervascular pancreatic neuroendocrine tumors (PNETs) from pancreatic ductal adenocarcinomas (PDACs). Materials and Methods The institutional review board approved this retrospective study and waived the informed consent requirement. Seventy-four patients with surgically confirmed PNETs and 82 patients with PDACs who underwent gadobutrol-enhanced MR imaging were included. Two radiologists independently evaluated the morphologic characteristics and temporal enhancement patterns of each tumor...
January 13, 2017: Radiology
https://www.readbyqxmd.com/read/28089889/myc-drives-progression-of-small-cell-lung-cancer-to-a-variant-neuroendocrine-subtype-with-vulnerability-to-aurora-kinase-inhibition
#11
Gurkan Mollaoglu, Matthew R Guthrie, Stefanie Böhm, Johannes Brägelmann, Ismail Can, Paul M Ballieu, Annika Marx, Julie George, Christine Heinen, Milind D Chalishazar, Haixia Cheng, Abbie S Ireland, Kendall E Denning, Anandaroop Mukhopadhyay, Jeffery M Vahrenkamp, Kristofer C Berrett, Timothy L Mosbruger, Jun Wang, Jessica L Kohan, Mohamed E Salama, Benjamin L Witt, Martin Peifer, Roman K Thomas, Jason Gertz, Jane E Johnson, Adi F Gazdar, Robert J Wechsler-Reya, Martin L Sos, Trudy G Oliver
Loss of the tumor suppressors RB1 and TP53 and MYC amplification are frequent oncogenic events in small cell lung cancer (SCLC). We show that Myc expression cooperates with Rb1 and Trp53 loss in the mouse lung to promote aggressive, highly metastatic tumors, that are initially sensitive to chemotherapy followed by relapse, similar to human SCLC. Importantly, MYC drives a neuroendocrine-low "variant" subset of SCLC with high NEUROD1 expression corresponding to transcriptional profiles of human SCLC. Targeted drug screening reveals that SCLC with high MYC expression is vulnerable to Aurora kinase inhibition, which, combined with chemotherapy, strongly suppresses tumor progression and increases survival...
December 31, 2016: Cancer Cell
https://www.readbyqxmd.com/read/28089436/the-significance-of-histologic-examination-of-gastrectomy-specimens-a-clinicopathologic-study-of-511-cases
#12
Pavel Kopach, Elizabeth M Genega, Sajani N Shah, Julie J Kim, Yvelisse Suarez
BACKGROUND: Sleeve gastrectomy (SG) is quickly becoming the preferred procedure for bariatric surgery. According to the American Society for Metabolic and Bariatric Surgery guidelines, routine preoperative upper gastrointestinal endoscopies are not recommended universally for bariatric surgery. Some studies have shown that the histologic examination of SG specimens is insignificant and not a cost-effective practice. However, some speculate SG examination may unveil pertinent findings and prevent further progression of precursor lesions...
November 15, 2016: Surgery for Obesity and related Diseases: Official Journal of the American Society for Bariatric Surgery
https://www.readbyqxmd.com/read/28089247/-mid-gut-neuroendocrine-tumors-news-on-medical-treatment
#13
Marie Dior, Johann Dreanic, Caroline Prieux-Klotz, Bertrand Brieau, Catherine Brezault, Romain Coriat
CONTEXT: Mid gut neuroendocrine tumors (NET) are rare tumors whose incidence is increasing. Curative surgery remains the gold standard for the treatment of NETs of the small intestine. Surgery should be considered as soon as possible even if a metastatic stage is diagnosed. The management of unresectable well-differentiated metastatic NETs of the small intestine recently changed with the publication of trials demonstrating the benefit of targeted therapies and metabolic radiotherapy, leading to a change of practices and update of French and international recommendations...
January 11, 2017: La Presse Médicale
https://www.readbyqxmd.com/read/28088602/aggressive-surgical-approach-to-the-management-of-neuroendocrine-tumors-a-report-of-1-000-surgical-cytoreductions-by-a-single-institution
#14
Eugene A Woltering, Brianne A Voros, David T Beyer, Yi-Zarn Wang, Ramcharan Thiagarajan, Pamela Ryan, Anne Wright, Robert A Ramirez, M Jennifer Ricks, J Philip Boudreaux
BACKGROUND: Neuroendocrine tumors (NETs) are rare neoplasms. Our group has treated over 2,000 NET patients and has performed over 1,000 surgical cytoreductive procedures. STUDY DESIGN: Records of 834 NET patients who underwent surgical cytoreduction at our institution were reviewed. Demographic information, intraoperative findings, extent of disease, complications, and survival rates were calculated. RESULTS: 800 patients underwent 1,001 cytoreductive surgeries...
January 11, 2017: Journal of the American College of Surgeons
https://www.readbyqxmd.com/read/28088513/an-immunogram-for-the-cancer-immunity-cycle-towards-personalized-immunotherapy-of-lung-cancer
#15
Takahiro Karasaki, Kazuhiro Nagayama, Hideki Kuwano, Jun-Ichi Nitadori, Masaaki Sato, Masaki Anraku, Akihiro Hosoi, Hirokazu Matsushita, Yasuyuki Morishita, Kosuke Kashiwabara, Masaki Takazawa, Osamu Ohara, Kazuhiro Kakimi, Jun Nakajima
INTRODUCTION: The interaction of immune cells and cancer cells shapes the immunosuppressive tumor microenvironment. For successful cancer immunotherapy, comprehensive knowledge of anti-tumor immunity as a dynamic spacio-temporal process is required for each individual patient. To this end, we developed an immunogram for the cancer-immunity cycle using next-generation sequencing. METHODS: Whole-exome sequencing and RNA-Seq was performed in 20 non-small cell lung cancer patients (12 adenocarcinoma, 7 squamous cell carcinoma, and 1 large cell neuroendocrine carcinoma)...
January 11, 2017: Journal of Thoracic Oncology
https://www.readbyqxmd.com/read/28087475/immunohistochemical-approach-for-the-diagnosis-of-a-liver-mass-on-small-biopsy-specimens
#16
Won-Tak Choi, Rageshree Ramachandran, Sanjay Kakar
Well-differentiated hepatocellular carcinoma (HCC) shares overlapping histological features with benign hepatocellular lesions, including hepatocellular adenoma (HCA) and focal nodular hyperplasia (FNH) in non-cirrhotic liver, and with high-grade dysplastic nodule (HGDN) in cirrhotic liver. Several metastatic tumors, such as neuroendocrine tumor, renal cell carcinoma, adrenocortical carcinoma, melanoma, and epithelioid angiomyolipoma, can be indistinguishable from HCC on histologic grounds. Since this distinction has important therapeutic implications, judicious use of immunohistochemical markers plays an important role in establishing an accurate diagnosis, especially when limited material of tumor is available on cell block or a small core biopsy...
January 10, 2017: Human Pathology
https://www.readbyqxmd.com/read/28087162/mir-24-inhibition-increases-menin-expression-and-decreases-cholangiocarcinoma-proliferation
#17
Laurent Ehrlich, Chad Hall, Julie Venter, David Dostal, Francesca Bernuzzi, Pietro Invernizzi, Fanyin Meng, Jerome P Trzeciakowski, Tianhao Zhou, Holly Standeford, Gianfranco Alpini, Terry C Lairmore, Shannon Glaser
Menin (MEN1) is a tumor-suppressor protein in neuroendocrine tissue. Because cholangiocytes can take on a neuroendocrine phenotype, we tested the novel hypothesis that menin regulates cholangiocarcinoma proliferation. Menin and miR-24 expression levels were measured in the following intrahepatic and extrahepatic cholangiocarcinoma (CCA) cell lines, Mz-ChA-1, TFK-1, SG231, CCLP, HuCCT-1, and HuH-28, as well as the nonmalignant human intrahepatic biliary line, H69. miR-24 miRNA and menin protein levels were manipulated in vitro in Mz-ChA-1 cell lines...
January 10, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28081332/surgical-management-of-large-cell-neuroendocrinelung-carcinoma-an-analysis-of-25-cases
#18
Funda İncekara, Koray Aydoğdu, Ebru Sayılır, Selim Şakir Erkmen Gülhan, Funda Demirağ, Sadi Kaya, Göktürk Fındık
BACKGROUND/AIM: Large-cell neuroendocrine carcinoma (LCNEC) of the lung is a relatively uncommon and aggressive subset of pulmonary neuroendocrine tumors, which include typical and atypical carcinoid, and small-cell lung cancer. LCNEC of the lung accounts for no more than 1% of all lung cancers. LCNECs show features of high-grade neuroendocrine tumors and patients with LCNEC have a very poor prognosis. MATERIALS AND METHODS: Twenty-five patients (22 males and 3 females; mean years 60...
December 20, 2016: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/28079577/transdifferentiation-of-neuroendocrine-cells-gangliocytoma-associated-with-two-pituitary-adenomas-of-different-lineage-in-men1
#19
Camille Sergeant, Christel Jublanc, Delphine Leclercq, Anne-Laure Boch, Franck Bielle, Gerald Raverot, Adrian F Daly, Jacqueline Trouillas, Chiara Villa
Gangliocytomas are rare and benign neuronal cell tumors, mostly found in the hypothalamic and sellar regions. Their histogenesis is still the subject of discussions. Herein we present a unique case of a pituitary gangliocytoma associated with a prolactinoma and a corticotroph adenoma in a patient affected by MEN1. The histologic study revealed shared features between adenomatous and neuronal cells, supporting the etiological hypothesis of a common origin or a phenomenon of transdifferentiation. Furthermore, gangliocytoma could be a new tumor related to MEN1...
January 10, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28079576/mixed-gangliocytoma-pituitary-adenoma-insights-on-the-pathogenesis-of-a-rare-sellar-tumor
#20
M Beatriz S Lopes, Emily Sloan, Julie Polder
Gangliocytomas originating in the sellar region are rare; most are tumors composed of gangliocytic and pituitary adenomatous elements, forming the so-called mixed gangliocytoma-pituitary adenoma. The majority of mixed gangliocytoma adenomas are associated with endocrinopathies, mainly acromegaly and less often Cushing disease and hyperprolactinemia. In the present study, 10 cases of mixed gangliocytoma and somatotroph adenomas were evaluated for patterns of cellular differentiation and expression of lineage-specific transcription factors...
January 10, 2017: American Journal of Surgical Pathology
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