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Neuroendocrine tumors

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https://www.readbyqxmd.com/read/27932399/novel-hybrid-phenotype-revealed-in-small-cell-lung-cancer-by-a-transcription-factor-network-model-that-can-explain-tumor-heterogeneity
#1
Akshata R Udyavar, David J Wooten, Megan D Hoeksema, Mukesh Bansal, Andrea Califano, Lourdes Estrada, Santiago Schnell, Jonathan M Irish, Pierre P Massion, Vito Quaranta
Small cell lung cancer (SCLC) is a devastating disease due to its propensity for early invasion and refractory relapse after initial treatment response. Although these aggressive traits have been associated with phenotypic heterogeneity, our understanding of this association remains incomplete. To fill this knowledge gap, we inferred a set of 33 transcription factors (TF) associated with gene signatures of the known neuroendocrine/epithelial (NE) and non-neuroendocrine/mesenchymal-like (ML) SCLC phenotypes...
December 8, 2016: Cancer Research
https://www.readbyqxmd.com/read/27932068/rovalpituzumab-tesirine-a-dll3-targeted-antibody-drug-conjugate-in-recurrent-small-cell-lung-cancer-a-first-in-human-first-in-class-open-label-phase-1-study
#2
Charles M Rudin, M Catherine Pietanza, Todd M Bauer, Neal Ready, Daniel Morgensztern, Bonnie S Glisson, Lauren A Byers, Melissa L Johnson, Howard A Burris, Francisco Robert, Tae H Han, Sheila Bheddah, Noah Theiss, Sky Watson, Deepan Mathur, Bharathi Vennapusa, Hany Zayed, Satwant Lally, Donald K Strickland, Ramaswamy Govindan, Scott J Dylla, Stanford L Peng, David R Spigel
BACKGROUND: Rovalpituzumab tesirine is a first-in-class antibody-drug conjugate directed against delta-like protein 3 (DLL3), a novel target identified in tumour-initiating cells and expressed in more than 80% of patients with small-cell lung cancer. We aimed to assess the safety and activity of rovalpituzumab tesirine in patients who progressed after one or more previous regimen. METHODS: We conducted a phase 1 open-label study at ten cancer centres in the USA...
December 2, 2016: Lancet Oncology
https://www.readbyqxmd.com/read/27931107/a-diffusely-enlarged-pancreas-the-un-usual-suspect
#3
Pedro Magalhães-Costa, Maria José Brito, Pedro Pinto-Marques
An 81-years-old female presented with obstructive jaundice and a non-specific clinical picture of nausea and appetite loss. Labs demonstrated a conjugated hyperbilirrubinemia (7.7 mg/dL), increased aspartate aminotransferase and alanine aminotransferase (10xULN and 8xULN, respectively), increased lactate dehydrogenase (10xULN) and serum lipase (3xULN). CA 19.9 was 342 U/mL (Ref value < 37 U/mL). There was no evidence of peripheral lymphadenopathy or hepatosplenomegaly. Imaging (Figure 1A and 1B) revealed a marked homogeneous enlargement of the pancreas (without any well-defined mass), dilation of the extra and intra-hepatic bile ducts and ascites...
December 2016: Revista Española de Enfermedades Digestivas
https://www.readbyqxmd.com/read/27931105/a-recurrence-of-pancreatic-non-functioning-neuroendocrine-tumor-mimicking-splenosis
#4
Yeon Ji Kim, Chang Nyol Paik
There have been a number of case reports where intra-abdominal splenosis or accessory spleens have mimicked metastatic cancer. However, to the best of our knowledge, this to be the first report of a Tc-99m phytate scintigraphy study in English literature showed the uptake in the metastatic mass of pancreatic NET which had been resected for 19 years ago. Although a nuclear scintigraphy is useful method to differentiate between abdominal splenosis and metastatic cancer, the histopathological confirmation should be considered...
December 2016: Revista Española de Enfermedades Digestivas
https://www.readbyqxmd.com/read/27928794/-establishment-of-risk-model-for-predicting-the-progression-within-1-year-of-patients-with-gastric-neuroendocrine-neoplasms-and-its-value-of-prediction
#5
Xiaojie Peng, Yu Zhang, Yun Bao, Lizhi Zhou, Zhihui Muo, Huishan Chen, Fachao Zhi, Side Liu, Jie Chen, Ye Chen
OBJECTIVE: To establish the risk model for predicting the progression within 1 year of patients with gastric neuroendocrine neoplasms(gNEN) and to evaluate its value of prediction. METHODS: Clinical data of 127 gENE patients with histologically comfirmed sporadic gNEN from January 1999 to February 2015 in Nanfang Hospital of Southern Medical University(n=63) and The First Affiliated Hospital of Sun Yat-sen University(n=64) were collected retrospectively. Twenty-five patients without follow-up were excluded, so a total of 102 cases were enrolled in the analysis...
November 25, 2016: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/27928793/-subtype-classification-and-clinicopathological-characteristics-of-gastric-neuroendocrine-neoplasms-an-analysis-of-241-cases
#6
Pan Zhang, Yu Zhang, Chi Zhang, Yanfen Shi, Jixi Liu, Qing Liu, Lili Yu, Miao Wang, Guoming Zou, Jie Lou, Jie Chen, Huangying Tan
OBJECTIVE: To study subtype classification of gastric neuroendocrine neoplasm (NEN) and their clinicopathological characteristics in order to provide reference for clinical practice. METHODS: Clinicopathological data of 241 gastric NEN patients (174 cases from China-Japan Friendship Hospital and 67 cases from The First Affiliated Hospital of Sun Yat-Sen University) between January 2011 and June 2016 were retrospectively summarized. According to serum gastrin, 24-hour intragastric pH monitoring and pathological grade, patients with gastric NEN were divided into 4 types: type I( (hypergastrinemia and achlorhydria, related to autoimmune chronic atrophic gastritis), type II( [hypergastrinemia and Zollinger-Ellison syndrome, related to gastrinoma or multiple endocrine neoplasia type I( (MEN-I()], type III( (sporadic disease with normal serum gastrin level), and type IIII( [poorly differentiated gastric neuroendocrine carcinoma (NEC) and mixed adenoneuroendocrine carcinoma (MANEC)]...
November 25, 2016: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/27928792/-clinicopathological-characteristics-and-prognosis-analysis-of-colorectal-neuroendocrine-neoplasms-based-on-the-data-from-domestic-six-medical-centers
#7
Yu Zhang, Xiaojie Peng, Kaizhou Jin, Wei Wang, Xingyu Feng, Yujie Zeng, Minhu Chen, Xianjun Yu, Ye Chen, Jie Chen
OBJECTIVE: To investigate the clinicopathological characteristics and their relationship with prognosis of colorectal neuroendocrine neoplasms (NEN). METHODS: Medical records of 329 patients with colorectal NEN between June 2001 and July 2016 from 6 large scale centers in China were reviewed to investigate the clinicopathological characteristics and their relationship with prognosis of colorectal NEN. RESULTS: (1) Colonic NEN: A total of 41 patients with colonic NEN were enrolled from The First Affiliated Hospital of Sun Yat-sen University(n=11), Sun Yat-sen University Cancer Center (n=15), Guangdong General Hospital (n=10), Sun Yet-san Memorial Hospital of Sun Yat-sen University (n=3) and Fudan University Shanghai Cancer Center (n=2)...
November 25, 2016: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/27928791/-clinicopathological-features-and-prognosis-of-patients-with-gastric-neuroendocrine-carcinoma-from-multiple-centers-in-southern-china
#8
Cheng Fang, Wei Wang, Yu Zhang, Xingyu Feng, Yujie Zeng, Yong Li, Jie Chen, Ye Chen, Zhiwei Zhou
OBJECTIVE: To analyze the clinicopathological features and prognostic factors of gastric neuroendocrine carcinoma(NEC) based on a multicenter database from five medical centers in Southern China. METHODS: Clinical and pathological data of 1 183 gastroenteropancreatic neuroendocrine neoplasms patients between January 2006 and December 2015 from five centers were retrospectively analyzed. A total of 156 gastric NEC cases(13.2%) with complete follow-up information were screened and included in the study, wherein 73 cases from Sun Yat-sen University Cancer Center, 27 cases from Nanfang Hospital of Southern Medical University, 26 cases from The First Affiliated Hospital of Sun Yat-sen University, 15 cases from Guangdong General Hospital and 15 cases from Sun Yat-sen Memorial Hospital of Sun Yat-sen University...
November 25, 2016: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/27928789/-surgical-management-of-locally-advanced-digestive-tract-neuroendocrine-neoplasm-with-or-without-liver-metastasis
#9
Xiaosong Wang, Jiangfeng Qiu, Zhiyong Wu
Neuroendocrine tumors in the digestive tract are rare, however their incidences increased obviously for the past few years. The purpose of this paper is to elucidate the surgical management of locally advanced digestive tract neuroendocrine neoplasms(NENs) with or without liver metastasis and to discuss the present classification of gastrointestinal NENs in order to provide reference for clinicians. WHO re-classified the gastroenteropancreatic NENs in 2010, but this classification remains many questions and needs further clinical trials to answer...
November 25, 2016: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/27928788/-basic-and-translational-research-progress-of-gastrointestinal-neuroendocrine-neoplasmas
#10
Yuli Song, Xiaoyi Li, Tiantian Song, Guole Lin, Yuanjia Chen
Gastrointestinal neuroendocrine tumors are a group of highly heterogeneous tumors. Their incidences have increased in the Western countries as well as in Asia for years. In recent years, predominant progression has been made in the basic and translational studies on gastrointestinal neuroendocrine tumors. Gastric neuroendocrine neoplasmas are classified as four types: type I( occurs on the basis of autoimmune atrophic gastritis, type II( clinically manifests as multiple endocrine tumor type I( and Zollinger-Ellison syndrome, type III( is sporadic neuroendocrine neoplasmas, and type IIII( is neuroendocrine carcinoma...
November 25, 2016: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/27928786/-implementation-of-multidisciplinary-team-in-the-diagnosis-and-treatment-of-gastroenteropancreatic-neuroendocrine-neoplasm
#11
Panpan Zhang, Lin Shen
Multidisciplinary team(MDT) has been considered as the best practice in the treatment planning and care for patients with cancer around the world. With the increased range and number of specialists involved, multidisciplinary coordination and communication have been enhanced, and the efficiency and quality of diagnosis and treatment of cancer have been improved. Neuroendocrine neoplasm (NEN) is a heterogeneous group of tumors originating from neuroendocrine cells located throughout the body, most of which is gastroenteropancreatic neuroendocrine neoplasm (GEP-NEN)...
November 25, 2016: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/27928785/-interpretation-of-the-latest-guidelines-in-the-treatment-of-gastrointestinal-neuroendocrine-neoplasms
#12
Luohai Chen, Jie Chen, Zhiwei Zhou
Neuroendocrine neoplasms(NEN) is a rare group of tumors with gastrointestinal tract as one of the most common primary locations. The most commonly used guidelines are proposed by European Neuroendocrine Tumor Society (ENETS) and National Comprehensive Cancer Network(NCCN) respectively, while the management of gastrointestinal NEN is generally identical in these two guidelines. Surgery is still the sole curative method which should be considered as the first choice of locoregional NEN. Otherwise, 40% to 50% of patients manifests metastatic disease when diagnosed...
November 25, 2016: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/27928520/calcitonin-negative-primary-neuroendocrine-tumor-of-the-thyroid-nonmedullary-in-a-dog
#13
E A Soler Arias, V A Castillo, M E Caneda Aristarain
The Calcitonin-negative neuroendocrine tumor of the thyroid (CNNET) or "nonmedullary" in humans is a rare tumor that arises primarily in the thyroid gland and may be mistaken for medullary thyroid carcinoma; it is characterized by the immunohistochemical (IHC) expression of neuroendocrine markers and the absence of expression for calcitonin. An Argentine dogo bitch showed a solid, compact thyroid tumor, which was IHC negative for the expression of calcitonin, carcinoembryonic antigen, thyroglobulin and S100 protein, and positive for synaptophysin and cytokeratin AE1-AE3...
2016: Open veterinary journal
https://www.readbyqxmd.com/read/27928440/a-rare-case-of-metastasized-non-functional-pancreatic-neuroendocrine-tumor-with-a-good-long-term-survival
#14
Mirică A, Bădărău Ia, Mirică R, Păun S, Păun Dl
Background: Non-functional neuroendocrine tumors of the pancreas (NF-pNETs) are a varied group of extremely rare malignancies. The majority of patients already have liver metastases at the diagnosis moment, thus, treatment options are restricted, and the survival rate is reserved. Case report: We presented the case of 59-year-old patient, diagnosed with non-functional well-differentiated pancreatic neuroendocrine tumor grade II (NET G2) with the presence of chromogranin A, synaptophysin and somatostatin receptor 2, together with liver and bone metastases...
October 2016: Journal of Medicine and Life
https://www.readbyqxmd.com/read/27927191/somatostatin-signaling-via-sstr1-contributes-to-the-quiescence-of-colon-cancer-stem-cells
#15
Shirin R Modarai, Lynn M Opdenaker, Vignesh Viswanathan, Jeremy Z Fields, Bruce M Boman
BACKGROUND: Neuroendocrine cells (NECs) reside adjacent to colonic stem cells (SCs) in the crypt stem cell (SC) niche, but how NECs are involved in regulation of SCs is unclear. We investigated NECs expressing somatostatin (SST) and somatostatin receptor type 1 (SSTR1) because SST inhibits intestinal proliferation. HYPOTHESIS: SSTR1 cells maintain SCs in a quiescent state, and aberrant SST signaling contributes to SC overpopulation in colorectal cancer (CRC). METHODS: The proportion of SCs to NECs cells was quantified, by flow cytometry, in CRC cell lines and primary normal/tumor tissues based on cellular ALDH and SSTR1 levels, respectively...
December 7, 2016: BMC Cancer
https://www.readbyqxmd.com/read/27926987/impact-of-everolimus-on-japanese-patients-with-advanced-pancreatic-neuroendocrine-neoplasms
#16
Lingaku Lee, Tetsuhide Ito, Hisato Igarashi, Keijiro Ueda, Takashi Fujiyama, Ken Kawabe, Yoshihiro Ogawa
BACKGROUND: Although everolimus has become a key therapeutic agent in patients with advanced pancreatic neuroendocrine neoplasms (PNEN), its efficacy and safety in clinical practice remains unclear. METHODS: Forty-seven patients with advanced PNEN treated with everolimus were reviewed retrospectively. To evaluate the safety of everolimus as a long-term treatment, the patients were divided into 2 groups according to treatment duration: group A, ≤1 year (n = 21); group B, >1 year (n = 26)...
December 7, 2016: Journal of Hepato-biliary-pancreatic Sciences
https://www.readbyqxmd.com/read/27926368/genetic-syndromes-with-pancreatic-manifestations
#17
REVIEW
Meredith E Pittman, Lodewijk A A Brosens, Laura D Wood
Although the pancreas is affected by only a small fraction of known inherited disorders, several of these syndromes predispose patients to pancreatic adenocarcinoma, a cancer that has a consistently dismal prognosis. Still other syndromes are associated with neuroendocrine tumors, benign cysts, or recurrent pancreatitis. Because of the variability of pancreatic manifestations and outcomes, it is important for clinicians to be familiar with several well-described genetic disorders to ensure that patients are followed appropriately...
December 2016: Surgical Pathology Clinics
https://www.readbyqxmd.com/read/27926362/pancreatic-neuroendocrine-tumors
#18
REVIEW
Safia N Salaria, Chanjuan Shi
Pancreatic neuroendocrine neoplasms include well-differentiated pancreatic neuroendocrine tumors (PanNETs) and neuroendocrine carcinomas (NECs) with well-differentiated PanNETs accounting for most cases. Other pancreatic primaries and metastatic carcinomas from other sites can mimic pancreatic neuroendocrine neoplasms. Immunohistochemical studies can be used to aid in the differential diagnosis. However, no specific markers are available to differentiate PanNETs from NETs of other sites. Although NECs are uniformly deadly, PanNETs have variable prognosis...
December 2016: Surgical Pathology Clinics
https://www.readbyqxmd.com/read/27926361/nonductal-pancreatic-cancers
#19
REVIEW
Sun-Young Jun, Seung-Mo Hong
Nonductal pancreatic neoplasms, including solid pseudopapillary neoplasms, acinar cell carcinomas, and pancreatoblastomas, are uncommon. These entities share overlapping gross, microscopic, and immunohistochemical features, such as well-demarcated solid neoplasms, monotonous cellular tumor cells with little intervening stroma, and abnormal beta-catenin expression. Each tumor also has unique clinicopathologic characteristics with diverse clinical behavior. To differentiate nonductal pancreatic neoplasms, identification of histologic findings, such as pseudopapillae, acinar cell features, and squamoid corpuscles, is important...
December 2016: Surgical Pathology Clinics
https://www.readbyqxmd.com/read/27924650/clinicopathological-characteristics-of-biliary-neuroendocrine-neoplasms-a-multicenter-study
#20
Kyong Joo Lee, Jae Hee Cho, Sang Hyub Lee, Kwang Hyuk Lee, Byung Kyu Park, Jun Kyu Lee, Sang Myung Woo, Ji Kon Ryu, Jong Kyun Lee, Yeon Suk Kim, Jae Woo Kim, Woo Jin Lee
OBJECTIVES: This study assessed the clinicopathological features, therapeutic approaches, and prognosis of patients with biliary neuroendocrine neoplasm (NENs). MATERIALS AND METHODS: Multicenter retrospective study of patients with biliary tract NENs in the gallbladder, the extrahepatic bile duct, or the ampulla of Vater between 2005 and 2014. RESULTS: Total of 43 patients were included in the study. The median age was 62 years (range: 29-84 years) and 58...
December 7, 2016: Scandinavian Journal of Gastroenterology
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