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Neuroendocrine neoplasm

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https://www.readbyqxmd.com/read/29340997/immunohistochemical-biomarkers-of-mesenchymal-neoplasms-in-endocrine-organs-diagnostic-pitfalls-and-recent-discoveries
#1
Yin P Hung, Jason L Hornick
Mesenchymal neoplasms rarely present in or adjacent to endocrine organs. In this context, the recognition of these rare tumor types can be challenging, with significant potential for misdiagnosis as sarcomatoid carcinomas (i.e., anaplastic thyroid carcinoma and sarcomatoid adrenal cortical carcinoma) or neuroendocrine carcinomas, depending upon the dominant histologic patterns. In this review, we address potential pitfalls in diagnosing selected mesenchymal neoplasms arising within or near endocrine organs, including dedifferentiated liposarcoma, synovial sarcoma, angiosarcoma, PEComa, proximal-type epithelioid sarcoma, Ewing sarcoma, and neuroblastoma...
January 16, 2018: Endocrine Pathology
https://www.readbyqxmd.com/read/29335251/goblet-cell-carcinomas-of-the-appendix-rare-but-aggressive-neoplasms-with-challenging-management
#2
Ashley Kieran Clift, Oskar Kornasiewicz, Panagiotis Drymousis, Omar Faiz, Harpreet Wasan, James Kinross, Thomas Cecil, Andrea Frilling
Goblet cell carcinomas (GCC) are a rare, aggressive sub-type of appendiceal tumours with neuroendocrine features, and controversy exists with regards to therapeutic strategy. We undertook a retrospective review of GCC patients surgically treated at two tertiary referral centres. Clinical and histopathological data were extracted from a prospectively maintained database. Survival analyses utilised Kaplan-Meier methodology. Twenty-one patients were identified (9 females). Median age at diagnosis was 55years (range 32-77)...
January 15, 2018: Endocrine Connections
https://www.readbyqxmd.com/read/29331723/progesterone-arrested-cell-cycle-progression-through-progesterone-receptor-isoform-a-in-pancreatic-neuroendocrine-neoplasm
#3
Samaneh Yazdani, Atsuko Kasajima, Yoshiaki Onodera, Keely May McNamara, Kazue Ise, Yasuhiro Nakamura, Tomoyoshi Tachibana, Fuyuhiko Motoi, Michiaki Unno, Hironobu Sasano
In pancreatic neuroendocrine neoplasms (Pan-NEN) progesterone signaling has been shown to have both inhibitory and stimulatory effects on cell proliferation. The ability of progesterone to inhibit tumor proliferation is of particular interest and is suggested to be mediated through the less abundantly expressed progesterone receptor (PR) isoform A (PRA). To date the mechanistic processes underlying this inhibition of proliferation remain unclear. To examine the mechanism of PRA actions, the human Pan-NEN cell line QGP-1, that endogenously expresses PR isoform B (PRB) without PRA, was transfected with PRA...
January 10, 2018: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/29330208/neuroendocrine-tumor-heterogeneity-adds-uncertainty-to-the-world-health-organization-2010-classification-real-world-data-from-the-spanish-tumor-registry-r-getne
#4
Barbara Nuñez-Valdovinos, Alberto Carmona-Bayonas, Paula Jimenez-Fonseca, Jaume Capdevila, Ángel Castaño-Pascual, Marta Benavent, Jose Javier Pi Barrio, Alex Teule, Vicente Alonso, Ana Custodio, Monica Marazuela, Ángel Segura, Adolfo Beguiristain, Marta Llanos, Maria Purificacion Martinez Del Prado, Jose Angel Diaz-Perez, Daniel Castellano, Isabel Sevilla, Carlos Lopez, Teresa Alonso, Rocio Garcia-Carbonero
BACKGROUND: Gastroenteropancreatic neuroendocrine neoplasms (GEP-NENs) are a complex family of tumors of widely variable clinical behavior. The World Health Organization (WHO) 2010 classification provided a valuable tool to stratify neuroendocrine neoplasms (NENs) in three prognostic subgroups based on the proliferation index. However, substantial heterogeneity remains within these subgroups, and simplicity sometimes entails an ambiguous and imprecise prognostic stratification. The purpose of our study was to evaluate the prognostic impact of histological differentiation within the WHO 2010 grade (G) 1/G2/G3 categories, and explore additional Ki-67 cutoff values in GEP-NENs...
January 12, 2018: Oncologist
https://www.readbyqxmd.com/read/29329160/predictive-effect-of-the-total-number-of-examined-lymph-nodes-on-n-staging-and-survival-in-pancreatic-neuroendocrine-neoplasms
#5
Xianbin Zhang, Lili Lu, Peng Liu, Fei Cao, Yushan Wei, Li Ma, Peng Gong
OBJECTIVES: We aim to examine the predictive effect of the total number of examined lymph nodes on N stage and survival in pancreatic neuroendocrine neoplasms (pNENs) and to determine the optimal threshold. METHODS: A pNENs data set from 2004 to 2013 was extracted from the Surveillance, Epidemiology, and End Result database. Multivariate logistic regression and Cox proportional hazards model were used to identify predictive factors associated with N stage and survival, respectively...
January 12, 2018: Pancreas
https://www.readbyqxmd.com/read/29327711/cd3-positive-plasmablastic-b-cell-neoplasms-a-diagnostic-pitfall
#6
Zenggang Pan, Mingyi Chen, Qianyun Zhang, Endi Wang, Liqun Yin, Youyuan Xu, Qin Huang, Youzhong Yuan, Xiaohui Zhang, Gang Zheng, Ji Yuan
Rare B-cell neoplasms with plasmablastic differentiation may aberrantly express CD3 by immunohistochemical staining, which places a great challenge for diagnosis. We here studied 17 cases of CD3+ plasmablastic B-cell neoplasms, including 12 plasmablastic lymphomas and 5 plasmablastic plasma cell myelomas. All 17 cases occurred in the extranodal sites with a male predominance (13/17). Four cases were initially misinterpreted by outside institutions, among which three were diagnosed as 'peripheral T-cell lymphoma, not otherwise specified' and one was classified as 'poorly differentiated neuroendocrine carcinoma'...
January 12, 2018: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/29327707/appendiceal-goblet-cell-carcinoids-and-adenocarcinomas-ex-goblet-cell-carcinoid-are-genetically-distinct-from-primary-colorectal-type-adenocarcinoma-of-the-appendix
#7
Moritz Jesinghaus, Björn Konukiewitz, Sebastian Foersch, Albrecht Stenzinger, Katja Steiger, Alexander Muckenhuber, Claudia Groß, Martin Mollenhauer, Wilfried Roth, Sönke Detlefsen, Wilko Weichert, Günter Klöppel, Nicole Pfarr, Anna Melissa Schlitter
The appendix gives rise to goblet cell carcinoids, which represent special carcinomas with distinct biological and histological features. Their genetic background and molecular relationship to colorectal adenocarcinoma is largely unknown. We therefore performed a next-generation sequencing analysis of 25 appendiceal carcinomas including 11 goblet cell carcinoids, 7 adenocarcinomas ex-goblet cell carcinoid, and 7 primary colorectal-type adenocarcinomas, using a modified Colorectal Cancer specific Panel comprising 32 genes linked to colorectal and neuroendocrine tumorigenesis...
January 12, 2018: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/29321190/genomic-landscape-of-pancreatic-neuroendocrine-tumours-the-international-cancer-genome-consortium
#8
Andrea Mafficini, Aldo Scarpa
Neuroendocrine tumours (NETs) may arise throughout the body and are a highly heterogeneous, relatively rare class of neoplasms difficult to study also for the lack of disease models. Despite this, knowledge on their molecular alterations has expanded in the latest years, also building from genetic syndromes causing their onset. Pancreatic NETs (PanNETs) have been among the most studied, and research so far has outlined a series of recurring features, as inactivation of MEN1, VHL, TSC1/2 genes, and hyperactivation of the PI3K/mTOR pathway...
January 10, 2018: Journal of Endocrinology
https://www.readbyqxmd.com/read/29314048/adjuvant-radiation-therapy-improves-patient-survival-in-early-stage-merkel-cell-carcinoma-a-15-year-single-institution-study
#9
Albert Y Han, Pratik B Patel, Mitchell Anderson, Miguel F P Diaz, Robert Chin, Maie A St John
OBJECTIVES/HYPOTHESIS: Merkel cell carcinoma (MCC) is a rare and aggressive neuroendocrine neoplasm of the skin. Growing evidence supports the benefit of postoperative adjuvant radiation therapy (RT) for locoregional control, but whether it improves overall survival (OS) has been debated. Our objective was to compare the OS of MCC patients who received postoperative RT with those who received surgery alone. STUDY DESIGN: Retrospective case series. METHODS: Cases of MCC between 2001 and 2016 at the University of California, Los Angeles Health System were reviewed...
January 4, 2018: Laryngoscope
https://www.readbyqxmd.com/read/29313083/-neuroendocrine-neoplasms-of-the-head-and-neck
#10
REVIEW
B Konukiewitz, A Agaimy, W Weichert, G Klöppel
Common to all neuroendocrine neoplasms (NENs), irrespective of their site of origin, is the expression of synaptophysin and chromogranin A. NENs of the head and neck region derive either from epithelial or neural/neuroectodermal tissues. The epithelial-type NENs express cytokeratins and include the well-differentiated typical and atypical carcinoids (also called low- and intermediate-grade neuroendocrine carcinomas by WHO), the poorly differentiated high-grade neuroendocrine carcinomas of small and large cell type and the mixed neuroendocrine-nonneuroendocrine neoplasms...
January 8, 2018: Der Pathologe
https://www.readbyqxmd.com/read/29301491/pancreatic-panniculitis-the-bright-side-of-the-moon-in-solid-cancer-patients
#11
Elena Guanziroli, Antonella Colombo, Antonella Coggi, Raffaele Gianotti, Angelo Valerio Marzano
BACKGROUND: Pancreatic panniculitis is a rare complication of pancreas disorders occurring in 0.3-3% of patients, most often accompanied by the pancreatic acinar carcinoma. It presents multiple, painful, deep, ill-defined, red-brown, migratory nodules and plaques of hard elastic consistency; often ulcerated and typically located on the lower proximal and distal extremities. The pathogenesis is not fully understood, but it is thought to result from lipolysis and fat necrosis with secondary tissue inflammation induced by pancreatic enzymes...
January 4, 2018: BMC Gastroenterology
https://www.readbyqxmd.com/read/29295804/-primary-well-differentiated-neuroendocrine-tumor-of-the-filum-terminale-case-report-and-literature-review
#12
Juan Manuel Revuelta Barbero, Anwar Saab Mazzei, Carlos Cotúa Quinteros, Laura de Reina
OBJECTIVE: To present a case of a well-differentiated primary intradural-extramedullary neuroendocrine tumor of the filum terminale and to conduct a literature review. CASE: A 68-years old patient was assessed after presenting lower back pain and sciatica with ineffective pain relief. The patient presented an intradural-extramedullary lumbar lesion arising from the filum terminale, which was partially resected. The pathology diagnosis was a well-differentiated primary neuroendocrine tumor (carcinoid tumor)...
December 30, 2017: Neurocirugía
https://www.readbyqxmd.com/read/29290942/identification-of-novel-serum-autoantibodies-against-eid3-in-non-functional-pancreatic-neuroendocrine-tumors
#13
Koji Hontani, Takahiro Tsuchikawa, Takaki Hiwasa, Toru Nakamura, Takashi Ueno, Toshihiro Kushibiki, Mizuna Takahashi, Kazuho Inoko, Hironobu Takano, Satoshi Takeuchi, Hirotoshi Dosaka-Akita, Masaki Kuwatani, Naoya Sakamoto, Yutaka Hatanaka, Tomoko Mitsuhashi, Hideaki Shimada, Toshiaki Shichinohe, Satoshi Hirano
Pancreatic neuroendocrine tumors (pNETs) are relatively rare heterogenous tumors, comprising only 1-2% of all pancreatic neoplasms. The majority of pNETs are non-functional tumors (NF-pNETs) that do not produce hormones, and as such, do not cause any hormone-related symptoms. As a result, these tumors are often diagnosed at an advanced stage because patients do not present with specific symptoms. Although tumor markers are used to help diagnosis and predict some types of cancers, chromogranin A, a widely used tumor marker of pNETs, has significant limitations...
December 5, 2017: Oncotarget
https://www.readbyqxmd.com/read/29284590/peptide-receptor-radionuclide-therapy-as-neoadjuvant-therapy-for-resectable-or-potentially-resectable-pancreatic-neuroendocrine-neoplasms
#14
Stefano Partelli, Emilio Bertani, Mirco Bartolomei, Carolina Perali, Francesca Muffatti, Chiara Maria Grana, Marco Schiavo Lena, Claudio Doglioni, Stefano Crippa, Nicola Fazio, Giuseppe Zamboni, Massimo Falconi
BACKGROUND: Peptide receptor radionuclide therapy is a valid therapeutic option for pancreatic neuroendocrine neoplasms. The aim of this study was to describe an initial experience with the use of peptide receptor radionuclide therapy as a neoadjuvant agent for resectable or potentially resectable pancreatic neuroendocrine neoplasms. METHODS: The postoperative outcomes of 23 patients with resectable or potentially resectable pancreatic neuroendocrine neoplasms at high risk of recurrence who underwent neoadjuvant peptide receptor radionuclide therapy (peptide receptor radionuclide therapy group) were compared with 23 patients who underwent upfront surgical operation (upfront surgery group)...
December 25, 2017: Surgery
https://www.readbyqxmd.com/read/29281757/short-term-outcomes-and-risk-factors-for-pancreatic-fistula-after-pancreatic-enucleation-a-single-center-experience-of-142-patients
#15
Xing Wang, Chun-Lu Tan, Hao Zhang, Yong-Hua Chen, Min Yang, Neng-Wen Ke, Xu-Bao Liu
BACKGROUND: Enucleation is increasingly used for benign or low-grade pancreatic neoplasms. Enucleation preserves the pancreatic parenchyma as well as decreases the risk of long-term endocrine and exocrine dysfunction, but may be associated with a higher rate of postoperative pancreatic fistula (POPF). The aim of this study was to assess short-term outcomes, in particular, POPF. METHODS: Data were collected retrospectively from all 142 patients who underwent pancreatic enucleation between 2009 and 2014 in our institution were analyzed...
December 27, 2017: Journal of Surgical Oncology
https://www.readbyqxmd.com/read/29280080/correction-to-ki67-labeling-index-assessment-and-prognostic-role-in-gastroenteropancreatic-neuroendocrine-neoplasms
#16
Günter Klöppel, Stefano La Rosa
The authors of the above article have correct the caption for Figure 3 - namely the second sentence - clarifying the information depicted within the picture correcting the Ki67 index percentage. Figure 3 and the corrected caption can be found below.
December 26, 2017: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/29260133/clinicopathological-features-of-gastroenteropancreatic-neuroendocrine-tumors-a-retrospective-evaluation-of-42-cases
#17
Kenan Büyükaşık, Aziz Arı, Cihad Tatar, Bülent Akçe, Mert Mahsuni Sevinç, Serkan Sarı, Esra Paşaoğlu, Hasan Bektaş
Objective: Neuroendocrine tumors arise from neuroendocrine cells in any part of the body; approximately two thirds of these tumors are located in the gastrointestinal tract and pancreas. Although gastroenteropancreatic neuroendocrine tumors are known as rare neoplasms, their prevalence has recently increased due to advanced diagnostic methods and increased awareness of the disorder. In the present study, we aimed to review patients who were treated and followed up for gastroenteropancreatic neuroendocrine tumors at our clinic in terms of clinical picture, pathological findings, and prognosis...
2017: Turkish journal of surgery
https://www.readbyqxmd.com/read/29259385/midgut-neuroendocrine-tumor-presenting-with-acute-intestinal-ischemia
#18
Ioannis Mantzoros, Natalia Antigoni Savvala, Orestis Ioannidis, Styliani Parpoudi, Lydia Loutzidou, Despoina Kyriakidou, Angeliki Cheva, Vasileios Intzos, Konstantinos Tsalis
Neuroendocrine tumors represent a heterogeneous group of neoplasms that arise from neuroendocrine cells and secrete various peptides and bioamines. While gastrointestinal neuroendocrine tumors, commonly called carcinoids, account for about 2/3 of all neuroendocrine tumors, they are relatively rare. Small intestine neuroendocrine tumors originate from intestinal enterochromaffin cells and represent about 1/4 of small intestine neoplasms. They can be asymptomatic or cause nonspecific symptoms, which usually leads to a delayed diagnosis...
December 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/29245922/regional-lymph-node-involvement-and-outcomes-in-appendiceal-neuroendocrine-tumors-a-seer-database-analysis
#19
Amir Mehrvarz Sarshekeh, Shailesh Advani, Daniel M Halperin, Claudius Conrad, Chan Shen, James C Yao, Arvind Dasari
Background: Appendiceal neuroendocrine neoplasms are most often diagnosed incidentally during appendectomy. The need for subsequent right hemicolectomy (RHC) is determined based on the risk of regional lymph node (LN) involvement. Tumor size has historically been used as an indicator of this risk, but controversy remains regarding its cut off. Furthermore, the impact of RHC on survival is unclear. Methods: We used the SEER database to identify patients diagnosed with appendiceal neuroendocrine tumors...
November 21, 2017: Oncotarget
https://www.readbyqxmd.com/read/29245236/a-unique-tripartite-collision-tumor-of-the-esophagus-a-case-report
#20
Dimitrios Schizas, Adamantios Michalinos, Paraskevi Alexandrou, Demetrios Moris, Evangelia Baliou, Diamantis Tsilimigras, Theodore Throupis, Theodore Liakakos
RATIONALE: We report a unique case of a tripartite esophageal collision tumor consisting of three separate histologic types. PATIENTS CONCERNS: Therapeutic dilemmas on the proper treatment of those rare neoplasms remain unanswered considering both proper surgical therapy and adjuvant therapy. DIAGNOSE: In this paper, we report a unique case of a patient with a tripartite esophageal collision tumor consisting of a small cell carcinoma, an adenocarcinoma of medium differentiation and a signet ring cell carcinoma...
December 2017: Medicine (Baltimore)
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