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Neuroendocrine neoplasm

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https://www.readbyqxmd.com/read/28644861/impact-of-ki67-re-assessment-at-time-of-disease-progression-in-patients-with-pancreatic-neuroendocrine-neoplasms
#1
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/28641483/good-performance-of-platinum-based-chemotherapy-for-high-grade-gastroenteropancreatic-and-unknown-primary-neuroendocrine-neoplasms
#2
Giovanni Brandi, Marco Paragona, Davide Campana, Nicole Brighi, Arrigo Bondi, Maria Abbondanza Pantaleo, Jody Corbelli, Maria Aurelia Barbera, Guido Biasco
To evaluate efficacy and safety of platinum and etoposide combination in the treatment of advanced gastroenteropancreatic (GEP) and unknown primary (CUP) neuroendocrine carcinomas (NEC), we analysed the records of 21 consecutive patients treated with this regimen from 1999 to 2012. Objective responses were obtained in 11 patients (52%) and disease stability (DS) in 5 (24%). Median progression-free survival (PFS) was 7 months (95% CI, 5.33-8.66). Median overall survival (OS) was 16 months (95% CI, 14.97-17...
June 22, 2017: Journal of Chemotherapy
https://www.readbyqxmd.com/read/28641291/surgical-management-of-patients-with-neuroendocrine-neoplasms-of-the-appendix-appendectomy-or-more
#3
Nikhil Pawa, Ashley K Clift, Helai Osmani, Panagiotis Drymousis, Andrzej Cichock, Rashpal Flora, Robert Goldin, Dimitrios Patsouras, Alan Baird, Anna Malczewska, James Kinross, Omar Faiz, Anthony Antoniou, Harpreet Wasan, Gregory A Kaltsas, Ara Darzi, Jaroslaw B Cwikla, Andrea Frilling
No abstract text is available yet for this article.
June 23, 2017: Neuroendocrinology
https://www.readbyqxmd.com/read/28637502/clinicopathologic-characteristics-and-prognosis-of-gastroenteropancreatic-neuroendocrine-neoplasms-a-multicenter-study-in-south-china
#4
Cheng Fang, Wei Wang, Yu Zhang, Xingyu Feng, Jian Sun, Yujie Zeng, Ye Chen, Yong Li, Minhu Chen, Zhiwei Zhou, Jie Chen
BACKGROUND: Gastroenteropancreatic neuroendocrine neoplasms (GEP-NENs) are a heterogeneous group of rare tumors. Many issues in terms of epidemiologic features, pathogenesis, and treatment of GEP-NENs are still under discussion. Our study aimed to analyze the clinicopathologic characteristics and prognosis of Chinese patients with GEP-NENs. METHODS: Complete clinicopathologic data and survival information of 1183 patients with GEP-NENs treated between 2005 and 2015 were collected from five medical centers in Guangdong Province, China...
June 21, 2017: Chinese Journal of Cancer
https://www.readbyqxmd.com/read/28637487/the-nf1-somatic-mutational-landscape-in-sporadic-human-cancers
#5
REVIEW
Charlotte Philpott, Hannah Tovell, Ian M Frayling, David N Cooper, Meena Upadhyaya
BACKGROUND: Neurofibromatosis type 1 (NF1: Online Mendelian Inheritance in Man (OMIM) #162200) is an autosomal dominantly inherited tumour predisposition syndrome. Heritable constitutional mutations in the NF1 gene result in dysregulation of the RAS/MAPK pathway and are causative of NF1. The major known function of the NF1 gene product neurofibromin is to downregulate RAS. NF1 exhibits variable clinical expression and is characterized by benign cutaneous lesions including neurofibromas and café-au-lait macules, as well as a predisposition to various types of malignancy, such as breast cancer and leukaemia...
June 21, 2017: Human Genomics
https://www.readbyqxmd.com/read/28635990/neuroendocrine-neoplasms-of-the-head-and-neck-and-olfactory-neuroblastoma-diagnosis-and-classification
#6
S Uccella, G Ottini, C Facco, R Maragliano, S Asioli, F Sessa, S La Rosa
Neuroendocrine neoplasms (NENs) of the head and neck are a rare group of heterogeneous epithelial neoplastic proliferations arising in virtually all of the different organs of this region, particularly in the nasal cavity, the paranasal sinuses, the nasopharynx, the larynx, the salivary glands, and the middle ear. They encompass a wide spectrum of entities ranging from very indolent neuroendocrine tumors to highly aggressive neuroendocrine carcinomas. They may represent a challenge for radiologists, oncologists, and pathologists and a correct diagnosis is crucial for the management of patients...
March 2017: Pathologica
https://www.readbyqxmd.com/read/28632813/cutaneous-metastasis-of-a-pulmonary-carcinoid-tumor
#7
Leyre Falto-Aizpurua, Sarah Seyfer, Bhuvaneswari Krishnan, Ida Orengo
Carcinoid tumors are uncommon neoplasms of neuroendocrine origin that generally arise in the gastrointestinal or bronchopulmonary tracts and typically are characterized by an indolent clinical course. Metastases from these primary neoplasms more commonly affect the viscera, with rare reports of cutaneous metastases to the skin. We report the case of a patient with a cutaneous carcinoid metastasis that was incidentally brought to our attention because of the exquisite tenderness of the lesion. A brief review of the literature also is provided...
May 2017: Cutis; Cutaneous Medicine for the Practitioner
https://www.readbyqxmd.com/read/28626594/a-case-report-gastric-mixed-neuroendocrine-nonneuroendocrine-neoplasm-with-aggressive-neuroendocrine-component
#8
Quang Duy Pham, Ichiro Mori, Robert Y Osamura
Mixed neuroendocrine-nonneuroendocrine neoplasm (MiNEN) is defined as mixed epithelial neoplasms composed of both neuroendocrine and nonneuroendocrine components with variable proportions for each component. Neuroendocrine component can show morphological features including well- or poorly differentiated neuroendocrine neoplasms and nonneuroendocrine component can present different tumor types depending on the site of origin. Recently, studies of tumors have shown that MiNENs are not as rare as our traditional belief, due to the wide application for immunohistochemistry...
2017: Case Reports in Pathology
https://www.readbyqxmd.com/read/28625066/a-rectal-neuroendocrine-neoplasm
#9
Modesto J Varas Lorenzo, Fernando Muñoz Agel
The incidence of gastric and rectal carcinoids is increasing. This is probably due to endoscopic screening. The prognosis is primarily dependent upon tumor size, aggressiveness (pathology, Ki-67), metastatic disease and stage. However, neuroendocrine carcinoma usually behaves as an adenocarcinoma.
June 19, 2017: Revista Española de Enfermedades Digestivas
https://www.readbyqxmd.com/read/28617885/the-role-of-wireless-capsule-endoscopy-wce-in-the-detection-of-occult-primary-neuroendocrine-tumors
#10
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/28616785/usefulness-of-nkx2-2-immunohistochemistry-for-distinguishing-ewing-sarcoma-from-other-sinonasal-small-round-blue-cell-tumors
#11
Austin McCuiston, Justin A Bishop
NKX2.2 is a new immunohistochemical marker that has been reported to be sensitive and specific for Ewing sarcoma (ES). It has not, however, been investigated specifically in the sinonasal small round blue cell tumor (SRBCT) differential diagnosis which includes many tumors specific to that site. It has also not been investigated in the newly recognized "adamantinoma-like" variant of ES. Immunohistochemistry for NKX2.2 was performed on 170 poorly differentiated sinonasal neoplasms: 73 squamous cell carcinomas (67 poorly differentiated, non-keratinizing, or basaloid types and 6 nasopharyngeal carcinomas), 46 olfactory neuroblastomas, 8 sinonasal undifferentiated carcinomas (SNUCs), 6 melanomas, 7 Ewing sarcomas, 6 SMARCB1-deficient carcinomas, 6 teratocarcinosarcomas, 5 alveolar rhabdomyosarcomas, 4 solid adenoid cystic carcinomas, 4 NK/T cell lymphomas, 3 NUT carcinomas, and 2 small cell carcinomas...
June 14, 2017: Head and Neck Pathology
https://www.readbyqxmd.com/read/28599853/post-obstructive-cyst-formation-in-pancreas-and-cystic-acinar-transformation-are-they-same
#12
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...
April 1, 2017: Pathology, Research and Practice
https://www.readbyqxmd.com/read/28598731/neoplasms-of-the-appendix-pictorial-review-with-clinical-and-pathologic-correlation
#13
Laura M Leonards, Anokh Pahwa, Maitraya K Patel, Jeffrey Petersen, Michael J Nguyen, Cecilia M Jude
Appendiceal neoplasms are uncommon tumors of the gastrointestinal tract that may manifest with symptoms of appendicitis, right lower quadrant pain, or palpable mass, leading to imaging or surgical intervention. The majority of appendiceal masses consist of primary epithelial neoplasms and neuroendocrine tumors (NETs). Epithelial neoplasms-mucinous and nonmucinous types-are more often detected at imaging than NETs due to their larger size and propensity for peritoneal spread and metastatic disease. Epithelial mucinous neoplasms are defined by the presence of mucin, detected at radiologic and pathologic examination...
June 9, 2017: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/28597909/diagnostic-and-therapeutic-guidelines-for-gastro-entero-pancreatic-neuroendocrine-neoplasms-recommended-by-the-polish-network-of-neuroendocrine-tumours
#14
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
https://www.readbyqxmd.com/read/28597868/loss-of-progesterone-receptor-expression-is-an-early-tumorigenesis-event-associated-with-tumor-progression-and-shorter-survival-in-pancreatic-neuroendocrine-tumor-patients
#15
Sung Joo Kim, Soyeon An, Jae Hoon Lee, Joo Young Kim, Ki-Byung Song, Dae Wook Hwang, Song Cheol Kim, Eunsil Yu, Seung-Mo Hong
Background: Pancreatic neuroendocrine tumors (PanNETs) are the second most common pancreatic neoplasms and there is no well-elucidated biomarker to stratify their detection and prognosis. Previous studies have reported that progesterone receptor (PR) expression status was associated with poorer survival in PanNET patients. Materials and Methods: To validate previous studies, PR protein expression was assessed in 21 neuroendocrine microadenomas and 277 PanNETs and compared with clinicopathologic factors including patient survival...
June 8, 2017: Journal of Pathology and Translational Medicine
https://www.readbyqxmd.com/read/28597001/calcified-liver-metastases-from-a-neuroendocrine-tumor-of-the-lung-atypical-carcinoid-a-case-report
#16
Rolf Reiter, Jochen Maul, Jan Christian Preis, Hendrik Blaeker, Zarko Grozdanovic
Pulmonary neuroendocrine tumors (NETs) are rare tumors with an incidence rate of 0.2-2/100 000 population/year in Western countries (M. E. Caplin et al. Ann Oncol 2015; 26:1604-20). They account for 1-2% of all neoplasms of the lung and constitute one-fourth to one-third of all NETs. Atypical carcinoids are far less common than typical carcinoids and predominantly occur in male smokers aged 50 -70 years. Most pulmonary NETs are asymptomatic due to their peripheral location. Surgical resection is the treatment of choice...
April 2017: Ultrasound International Open
https://www.readbyqxmd.com/read/28586335/biology-and-evolution-of-poorly-differentiated-neuroendocrine-tumors
#17
David S Rickman, Himisha Beltran, Francesca Demichelis, Mark A Rubin
Neuroendocrine (NE) cancers are a diverse group of neoplasms typically diagnosed and treated on the basis of their site of origin. This Perspective focuses on advances in our understanding of the tumorigenesis and treatment of poorly differentiated neuroendocrine tumors. Recent evidence from sequencing indicates that, although neuroendocrine tumors can arise de novo, they can also develop as a result of lineage plasticity in response to pressure from targeted therapies. We discuss the shared genomic alterations of these tumors independently of their site of origin, and we explore potential therapeutic strategies on the basis of recent biological findings...
June 6, 2017: Nature Medicine
https://www.readbyqxmd.com/read/28566895/in-vivo-and-ex-vivo-confocal-endomicroscopy-of-pancreatic-cystic-lesions-a-prospective-study
#18
Somashekar G Krishna, Rohan M Modi, Amrit K Kamboj, Benjamin J Swanson, Phil A Hart, Mary E Dillhoff, Andrei Manilchuk, Carl R Schmidt, Darwin L Conwell
AIM: To investigate the reproducibility of the in vivo endoscopic ultrasound (EUS) - guided needle based confocal endomicroscopy (nCLE) image patterns in an ex vivo setting and compare these to surgical histopathology for characterizing pancreatic cystic lesions (PCLs). METHODS: In a prospective study evaluating EUS-nCLE for evaluation of PCLs, 10 subjects underwent an in vivo nCLE (AQ-Flex nCLE miniprobe; Cellvizio, MaunaKea, Paris, France) during EUS and ex vivo probe based CLE (pCLE) of the PCL (Gastroflex ultrahigh definition probe, Cellvizio) after surgical resection...
May 14, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28566532/risk-and-protective-factors-for-the-occurrence-of-sporadic-pancreatic-endocrine-neoplasms
#19
Roberto Valente, Alastair J Hayes, Sven-Petter Haugvik, Per Hedenström, Darko Siuka, Emilie Korsæth, Daniel Kaemmerer, Stuart Michael Robinson, Patrick Maisonneuve, Gianfranco Delle Fave, Bjorn Lindkvist, Gabriele Capurso
Pancreatic neuroendocrine neoplasms (PNENs) represent 10% of all pancreatic tumors by prevalence. Their incidence has reportedly increased over recent decades in parallel with that of pancreatic adenocarcinoma. PNENs are relatively rare and of the few institutions that have published potential risk factors, findings have been heterogenous. AIM: To investigate the association between potential risk and protective factors for the occurrence of sporadic PNENs across a European population from several institutions...
May 31, 2017: Endocrine-related Cancer
https://www.readbyqxmd.com/read/28560856/peripancreatic-paraganglioma-mimics-pancreatic-gastrointestinal-neuroendocrine-tumor-on-fine-needle-aspiration-report-of-two-cases-and-review-of-the-literature
#20
Jennifer Zeng, Aylin Simsir, Thaira Oweity, Cristina Hajdu, Steven Cohen, Yan Shi
Cytologic diagnosis of extra-adrenal paraganglioma presenting as a peripancreatic mass is challenging with a high error rate due to its rarity. We report two cases of peripancreatic masses identified by radiology. Endoscopic ultrasound-guided fine needle aspiration (FNA) of the masses showed a moderately cellular tumor composed of small to medium sized neoplastic cells with round to oval nuclei, arranged singly and in loose clusters. Focal rosette-like structures were present. The cells were positive for neuroendocrine markers (synaptophysin and chromogranin)...
May 30, 2017: Diagnostic Cytopathology
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