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Tumors neuroendocrine

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https://www.readbyqxmd.com/read/29454048/new-insights-into-the-molecular-characteristics-of-pulmonary-carcinoids-and-large-cell-neuroendocrine-carcinomas-and-the-impact-on-their-clinical-management
#1
REVIEW
J L Derks, N Leblay, S Lantuejoul, A M Dingemans, E J M Speel, L Fernandez-Cuesta
Carcinoids and large-cell neuroendocrine carcinomas (LCNEC) are rare neuroendocrine lung tumors. Here we provide an overview of the most updated data on the molecular characteristics of these diseases. Recent genomic studies showed that carcinoids generally contain a low mutational burden and few recurrently mutated genes. Most of the reported mutations occur in chromatin-remodeling genes (e.g. MEN1), and few affect genes of the PI3K-AKT-mTOR pathway. Aggressive disease has been related to chromothripsis, DNA-repair gene mutations, loss of OTP/CD44, and upregulation of RET gene expression...
February 14, 2018: Journal of Thoracic Oncology
https://www.readbyqxmd.com/read/29451738/well-differentiated-grade-3-pancreatic-neuroendocrine-tumors-compared-with-related-neoplasms-a-morphologic-study
#2
Carlie S Sigel, Vitor Werneck Krauss Silva, Michelle D Reid, David Chhieng, Olca Basturk, Keith M Sigel, Tanisha D Daniel, David S Klimstra, Laura H Tang
BACKGROUND: Pancreatic neuroendocrine neoplasms with a Ki-67 labeling index greater than 20% were reclassified in 2017 by the World Health Organization into well differentiated (WD) and poorly differentiated grade 3 neuroendocrine carcinoma (NEC). The authors describe the cytologic features of grade 3 WD pancreatic neuroendocrine neoplasms compared with grade 2 neoplasms and NEC. METHODS: Fine-needle aspirates from 65 pancreatic neuroendocrine neoplasms were reviewed, and their cytomorphologic features were compared across grade 2, WD grade 3, and PD small cell type (PD-S), large cell type (PD-L), and type not otherwise specified (PD-NOS) neoplasms...
February 16, 2018: Cancer Cytopathology
https://www.readbyqxmd.com/read/29451701/phase-1b-study-of-pasireotide-everolimus-and-selective-internal-radioembolization-therapy-for-unresectable-neuroendocrine-tumors-with-hepatic-metastases
#3
Hyun S Kim, Walid L Shaib, Chao Zhang, Ganji Purnachandra Nagaraju, Christina Wu, Olatunji B Alese, Zhengjia Chen, Edith Brutcher, Meredith Renfroe, Bassel F El-Rayes
BACKGROUND: Neuroendocrine tumors (NETs) metastasize to the liver. Everolimus and selective internal radioembolization (SIRT) are approved treatments. Pasireotide is a somatostatin analogue with an affinity for somatostatin receptors 1, 2, 3, and 5. Everolimus and pasireotide may potentiate SIRT radiosensitization and inhibit rebound angiogenesis. This study evaluated the safety of pasireotide, everolimus, and SIRT. METHODS: This 3 + 3 phase 1 trial evaluated 3 dose levels of everolimus (2...
February 16, 2018: Cancer
https://www.readbyqxmd.com/read/29450787/a-case-of-small-intestinal-neuroendocrine-carcinoma-diagnosed-using-double-balloon-endoscopy-with-long-term-survival
#4
Seiji Kawano, Yuichi Miyashima, Yoshio Miyabe, Yoshinari Kawai, Toshihiro Murata, Masashi Uda, Toshihiro Inokuchi, Hiroyuki Okada
Neuroendocrine neoplasms, including neuroendocrine tumors (NETs) and neuroendocrine carcinomas (NECs), are rare epithelial tumors with a predominant neuroendocrine differentiation. Compared with NETs, NECs have been reported to be rarer and have a poorer prognosis. We present a rare case of small bowel NEC diagnosed using double-balloon endoscopy (DBE) and the long-term survival accomplished via intensive therapy. DBE revealed an ulcerative tumor in the deep jejunum, and biopsy specimens showed large and highly dysplastic tumor cells; immuno-histological synaptophysin and chromogranin A tests were positive, and the Ki-67 index was more than 90%...
February 15, 2018: Clinical Journal of Gastroenterology
https://www.readbyqxmd.com/read/29450724/chromaffin-cell-biology-inferences-from-the-cancer-genome-atlas
#5
REVIEW
Lauren Fishbein, Matthew D Wilkerson
Pheochromocytomas and paragangliomas (PCC/PGLs) are rare neuroendocrine tumors that are unusually diverse in metabolic profiles, in classes of molecular alterations and across a large number of altered genes. The Cancer Genome Atlas (TCGA) comprehensively profiled the molecular landscape of PCC/PGLs and identified novel genomic alterations and a new molecular classification of PCC/PGLs. In this review, we discuss the significant clinico-molecular findings of this integrated profiling study. We then review the molecular data of the TCGA cohort centering around known markers of sympathoadrenal cell lineage to better understand chromaffin cell biology...
February 15, 2018: Cell and Tissue Research
https://www.readbyqxmd.com/read/29449735/alk-positive-adenocarcinoma-of-the-lung-expressing-neuroendocrine-markers-and-presenting-as-a-pituitary-adenoma
#6
M C Mengoli, F Bertolini, M Maur, F Barbieri, L Longo, P Gasparri, M Tiseo, G Rossi
We report an ALK-rearranged adenocarcinoma of the lung presenting as a pituitary metastasis, clinically simulating a pituitary adenoma. The patient, a 50 year-old, former-smoking woman was admitted with a Parinaud's syndrome characterized by progressive oculomotor impairment of visual verticality, bitemporal hemianopsia and nystagmus. Imaging studies showed a sellar tumor and the biopsy revealed a TTF-1 and napsin positive lung adenocarcinoma strongly expressing synaptophysin and CD56, also harboring ALK rearrangement...
December 2017: Pathologica
https://www.readbyqxmd.com/read/29449731/mixed-malignant-mullerian-tumor-with-neuroendocrine-features-in-an-irradiated-uterus-for-cervical-carcinoma-a-unique-association-a-morphological-immunohistochemisty-and-ultrastructural-study
#7
V G Vellone, B Spina, F Grillo, P Calamaro, F Sarocchi, P Sala, S Ferrero, E Fulcheri
Chemo-radiation represents an effective therapy for carcinoma of the uterine cervix. The endometrium may however receive a consistent dose of mutagenic radiations and patients may have an increased risk of secondary malignancies. Endometrial mixed malignant mullerian tumor (MMMT) is a rare, highly aggressive disease, and neuroendocrine features are even rarer. A 68 years old woman underwent radio-chemotherapy for a squamous cell carcinoma of the cervix. Follow up was uneventful until, eight years after radio-chemotherapy, imaging exams detected a diffuse enlargement of the uterine body...
December 2017: Pathologica
https://www.readbyqxmd.com/read/29449726/primary-well-differentiated-neuroendocrine-tumor-of-ovary-collides-with-mucinous-borderline-tumor-in-a-postmenopausal-female-a-report-of-case-and-review-of-literature
#8
M Shahid, A Siddiqi
Collision tumors represent a coexistence of two adjacent but histologically distinct tumors without histologic admixture in an organ. Primary well differentiated neuroendocrine tumor of ovary is rare and coexistent borderline mucinous tumor makes this association extremely rare. Although these tumors have been reported in other organs, its occurrence in ovary is rare. Collision tumor comprising primary neuroendocrine tumor of ovary and mucinous borderline tumor is an extremely rare occurrence. Here we report a case of this collision tumor in a postmenopausal female...
December 2017: Pathologica
https://www.readbyqxmd.com/read/29448303/nomogram-predicting-the-risk-of-recurrence-after-curative-intent-resection-of-primary-non-metastatic-gastrointestinal-neuroendocrine-tumors-an-analysis-of-the-u-s-neuroendocrine-tumor-study-group
#9
Katiuscha Merath, Fabio Bagante, Eliza W Beal, Alexandra G Lopez-Aguiar, George Poultsides, Eleftherios Makris, Flavio Rocha, Zaheer Kanji, Sharon Weber, Alexander Fisher, Ryan Fields, Bradley A Krasnick, Kamran Idrees, Paula M Smith, Cliff Cho, Megan Beems, Carl R Schmidt, Mary Dillhoff, Shishir K Maithel, Timothy M Pawlik
BACKGROUND: The risk of recurrence after resection of non-metastatic gastro-entero-pancreatic neuroendocrine tumors (GEP-NET) is poorly defined. We developed/validated a nomogram to predict risk of recurrence after curative-intent resection. METHODS: A training set to develop the nomogram and test set for validation were identified. The predictive ability of the nomogram was assessed using c-indices. RESULTS: Among 1477 patients, 673 (46%) were included in the training set and 804 (54%) in y the test set...
February 15, 2018: Journal of Surgical Oncology
https://www.readbyqxmd.com/read/29448120/imaging-features-of-malignant-abdominal-neuroendocrine-tumors-with-rare-presentation
#10
Giuseppe Corrias, Serena Monti, Natally Horvat, Laura Tang, Olca Basturk, Luca Saba, Lorenzo Mannelli
BACKGROUND: Gastroenteropancreatic neuroendocrine tumors (NETs) are rare entities arising from neuroendocrine cells in the gastroenteric tract and pancreas. The purpose of this article is to present four cases of gastroenteropancreatic NETs that featured a challenging diagnosis. CASE PRESENTATION: We report a case series of four NETs, each with different features. All NETs were suspected based on clinical and biochemical data. The workup of the abnormalities was performed with CT, PET or MRI...
February 8, 2018: Clinical Imaging
https://www.readbyqxmd.com/read/29444629/canine-clitoral-carcinoma-a-clinical-cytologic-histopathologic-immunohistochemical-and-ultrastructural-study
#11
Ranieri Verin, Francesco Cian, Jennifer Stewart, Diana Binanti, Amy L MacNeill, Martina Piviani, Paola Monti, Gianna Baroni, Sophie Le Calvez, Timothy J Scase, Riccardo Finotello
Vaginal and vulvar tumors are uncommon in dogs. Knowledge of canine primary clitoral neoplasia is restricted to a few case reports, and only carcinomas have been reported. Cytologic and histologic features reported in the literature seem to overlap with those of canine apocrine gland anal sac adenocarcinoma (AGASA). Clinical features also recall those of canine AGASA, such as locoregional metastases and hypercalcemia of malignancy (HM). In this study, 6 cases of primary canine clitoral carcinomas (CCCs), with and without HM, were investigated by means of cytology, histopathology, electron microscopy, and immunohistochemistry for neuroendocrine markers including chromogranin A (CGA), synaptophysin (SYN), neuron-specific enolase (NSE), and S-100...
January 1, 2018: Veterinary Pathology
https://www.readbyqxmd.com/read/29441166/a-case-of-madness-resulting-in-a-fortunate-outcome-case-report-of-a-psychotic-break-as-a-result-of-cortisol-secreting-thymic-neuroendocrine-thymic-tumor
#12
Jibran Durrani, Faizan Malik, Naveed Ali, Syed Imran Mustafa Jafri, Mohsin Hamid
Representing a mere 2-5% of the total thymic malignancies and 0.4% of total carcinoid tumors, primary thymic neuroendocrine tumors (NETs) are the zebras of the thymic neoplasms. They were initially characterized as 'epithelial thymomas'; later, the term carcinoid tumors was coined by Rosai and Higa. These tumors are highly unpredictable in their presentation and prognosis. Coupled with variable clinical presentation, rare pathologic diagnosis and absence of diagnostic and prognostic parameters, it is a challenge for both patients and clinicians...
2018: Journal of Community Hospital Internal Medicine Perspectives
https://www.readbyqxmd.com/read/29440175/pan-cancer-molecular-classes-transcending-tumor-lineage-across-32-cancer-types-multiple-data-platforms-and-over-10-000-cases
#13
Chad J Creighton, Fengju Chen, Yiqun Zhang, Don L Gibbons, Benjamin Deneen, David Kwiatkowski, Michael Ittmann
PURPOSE: The Cancer Genome Atlas data resources represent an opportunity to explore commonalities across cancer types involving multiple molecular levels, but tumor lineage and histology can represent a barrier in moving beyond differences related to cancer type. EXPERIMENTAL DESIGN: On the basis of gene expression data, we classified 10224 cancers, representing 32 major types, into ten molecular-based "classes."  Molecular patterns representing tissue or histologic dominant effects were first removed computationally, with the resulting classes representing emergent themes across tumor lineages...
February 9, 2018: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/29438170/diffuse-idiopathic-pulmonary-neuroendocrine-cell-hyperplasia-dipnech-syndrome-and-carcinoid-tumors-with-without-nech-a-clinicopathologic-radiologic-and-immunomolecular-comparison-study
#14
Maria Cecilia Mengoli, Giulio Rossi, Alberto Cavazza, Renato Franco, Federica Zito Marino, Mario Migaldi, Letizia Gnetti, Enrico Maria Silini, Luca Ampollini, Marcello Tiseo, Filippo Lococo, Ludovic Fournel, Paolo Spagnolo, Vincent Cottin, Thomas V Colby
The diagnostic criteria of diffuse idiopathic pulmonary neuroendocrine cell hyperplasia (DIPNECH) are not well defined, and DIPNECH can be mistaken for carcinoids associated with neuroendocrine cell hyperplasia (NECH). In this study, we compared clinical, radiologic, histologic, immunohistochemical, and molecular features of DIPNECH and isolated carcinoids with/without NECH. The study population included 151 cases (77 female patients and 74 male patients), 19 with DIPNECH and 132 with carcinoids with/without NECH...
February 12, 2018: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/29438167/insm1-is-a-sensitive-and-specific-marker-of-neuroendocrine-differentiation-in-head-and-neck-tumors
#15
Lisa M Rooper, Justin A Bishop, William H Westra
The head and neck is the site of a wide and sometimes bewildering array of neuroendocrine (NE) tumors. Although recognition of NE differentiation may be necessary for appropriate tumor classification and treatment, traditional NE markers such as synaptophysin, chromogranin, and CD56 are not always sufficiently sensitive or specific to make this distinction. Insulinoma-associated protein 1 (INSM1) is a novel transcription factor that has recently demonstrated excellent sensitivity and specificity for NE differentiation in various anatomic sites, but has not yet been extensively evaluated in tumors of the head and neck...
February 12, 2018: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/29435905/neuroendocrine-carcinoma-of-gallbladder-a-step-beyond-palliative-therapy-experience-of-25-cases
#16
Amol Vijay Kanetkar, Shraddha Patkar, Krunal Harischandra Khobragade, Vikas Ostwal, Anant Ramaswamy, Mahesh Goel
PURPOSE: Published literature on gall bladder neuroendocrine tumors (GB NETs) is limited with none reporting the role of multimodal therapy. METHODS: Patients with histologically confirmed GB NETs treated at Tata Memorial Hospital, Mumbai, from January 2010 to June 2017 were analyzed. Staging was done by contrast-enhanced computed tomography (CECT) of abdomen and chest or a positron emission topography (PET) scan. Tumor marker (CA19-9) was measured. WHO-2017 guideline was used to classify GB NETs...
February 13, 2018: Journal of Gastrointestinal Cancer
https://www.readbyqxmd.com/read/29435419/two-nonsense-somatic-mutations-in-men1-identified-in-sporadic-insulinomas
#17
Cheng Qi, Jiayue Duan, Qingfeng Shi, Mingguang Wang, Changqing Yan
Insulinomas are functional pancreatic neuroendocrine tumors that cause hypoglycemia and severe morbidity. The aim of our study was to identify gene mutations responsible for tumorigenesis of sporadic insulinoma. Whole exome sequencing analysis was performed on tumors and paired peripheral blood from three patients with insulinomas. After initial analysis, somatic mutations were obtained and a deleterious protein product was further predicted by various bioinformatic programs. Whole exome sequencing identified 55 rare somatic mutations among three insulinoma patients, including MEN1 gene nonsense mutations (c...
February 2018: FEBS Open Bio
https://www.readbyqxmd.com/read/29435031/analysis-of-radiation-effects-in-two-irradiated-tumor-spheroid-models
#18
Afkar Al-Ramadan, Anja C Mortensen, Jörgen Carlsson, Marika V Nestor
Multicellular spheroids have proven suitable as three-dimensional in vivo-like models of non-vascularized micrometastases. Unlike monolayer-based models, spheroids mirror the cellular milieu and the pathophysiological gradients inside tumor nodules. However, there is limited knowledge of the radiation effects at the molecular level in spheroids of human origin. The present study is a presentation of selected cell biological processes that may easily be analyzed with methods available at routine pathology laboratories...
March 2018: Oncology Letters
https://www.readbyqxmd.com/read/29434915/immunohistochemical-cd73-expression-status-in-gastrointestinal-neuroendocrine-neoplasms-a-retrospective-study-of-136-patients
#19
Kohei Ono, Eisuke Shiozawa, Nobuyuki Ohike, Tomonori Fujii, Hideki Shibata, Tetsuya Kitajima, Koichiro Fujimasa, Naoko Okamoto, Yukiko Kawaguchi, Tasuku Nagumo, Sakiko Tazawa, Mayumi Homma, Toshiko Yamochi-Onizuka, Tomoko Norose, Hitoshi Yoshida, Masahiko Murakami, Gensyu Tate, Masafumi Takimoto
The WHO 2010 classification divides gastrointestinal neuroendocrine neoplasms (GI-NENs) into neuroendocrine tumor (NET) G1, NET G2, neuroendocrine carcinoma (NEC) and mixed adenoendocrine carcinoma (MANEC) groups. A total of 136 cases of GI-NENs diagnosed at our hospitals as gastrointestinal carcinoids, endocrine cell carcinomas and NENs over the last 11 years, using the WHO 2010 classification were assessed. Among the 136 cases, 88.2% (120/136) were classified into the NET group (NET G1/G2) and 11.8% (16/136) were classified into the NEC group (NEC/MANEC)...
February 2018: Oncology Letters
https://www.readbyqxmd.com/read/29434496/neuroendocrine-tumor-arising-from-meckel-s-diverticulum-unexpectedly-diagnosed-after-diverticulectomy-and-in-which-multiple-lymph-node-metastases-were-found-after-reoperation-a-case-report
#20
Ken Sugezawa, Hiroaki Saito, Yusuke Kono, Yuki Murakami, Yuji Shishido, Hirohiko Kuroda, Tomoyuki Matsunaga, Yoji Fukumoto, Tomohiro Osaki, Yoshiyuki Fujiwara
A 47-year-old man with progressive anemia possibly due to digestive tract bleeding was referred to our hospital. Contrast-enhanced computed tomography of the abdomen showed a 2-cm tumor lesion arising near the small intestine. Enteroscopy revealed a 3-cm submucosal tumor at the ileum. A gastrointestinal stromal tumor of the small intestine was suspected, and the patient underwent surgery. During the operation, a diverticulum approximately 60 cm orad to the terminal ileum and a tumor at the top of the diverticulum were observed...
December 2017: Yonago Acta Medica
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