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Tumors neuroendocrine

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https://www.readbyqxmd.com/read/29675587/a-case-of-gastric-neuroendocrine-neoplasm-with-mixed-grade-a-distinct-type-of-high-grade-well-differentiated-neuroendocrine-neoplasm
#1
Elia Guadagno, Gaetano Luglio, Alessandro Iacobelli, Giorgio Borrelli, Antonio Castaldi, Gaetano De Rosa, Marialaura Del Basso De Caro
Grade 3 neuroendocrine tumor (NET G3) is a rare new entity that has recently been introduced in the classification of neuroendocrine neoplasms of the pancreas. It is a well-differentiated form, with a high proliferative activity (Ki67 > 20%), and it represents a category whose prognosis is intermediate between NET G2 and poorly differentiated neuroendocrine carcinoma (NEC G3). In sites other than the pancreas, this new category is by far less coded. Herein is reported a case of NET G3 of the stomach, the 13th described in literature...
April 19, 2018: Endocrine Pathology
https://www.readbyqxmd.com/read/29673366/improving-cytocompatibility-of-cdte-quantum-dots-by-schiff-base-coordinated-lanthanides-surface-doping
#2
Hana Buchtelova, Vladislav Strmiska, Zuzana Skubalova, Simona Dostalova, Petr Michalek, Sona Krizkova, David Hynek, Lukas Kalina, Lukas Richtera, Amitava Moulick, Vojtech Adam, Zbynek Heger
BACKGROUND: Suitable fluorophores are the core of fluorescence imaging. Among the most exciting, yet controversial, labels are quantum dots (QDs) with their unique optical and chemical properties, but also considerable toxicity. This hinders QDs applicability in living systems. Surface chemistry has a profound impact on biological behavior of QDs. This study describes a two-step synthesis of QDs formed by CdTe core doped with Schiff base ligand for lanthanides [Ln (Yb3+ , Tb3+ and Gd3+ )] as novel cytocompatible fluorophores...
April 19, 2018: Journal of Nanobiotechnology
https://www.readbyqxmd.com/read/29673080/systemic-sclerosis-and-malignancy
#3
Gokhan Sargin, Taskin Senturk, Songul Cildag
BACKGROUND: Systemic sclerosis (SSc) has increased risk of morbidity and mortality due to pulmonary fibrosis, pulmonary arterial hypertension, renal crisis, infections and malignancies. Chemical exposure, smoking and cytotoxic drugs increase the malignancy risk in rheumatic diseases including SSc. We aim to evaluate characteristics, identify risk factors and mortality in SSc patients with malignancies. METHODS: One hundred and fifty-three patients with SSc (24 male, 129 female, with mean age of 56...
April 19, 2018: International Journal of Rheumatic Diseases
https://www.readbyqxmd.com/read/29669844/open-issues-on-g3-neuroendocrine-neoplasms-back-to-the-future
#4
Maria Chiara Zatelli, Elia Guadagno, Erika Messina, Fabio Lo Calzo, Antongiulio Faggiano, Annamaria A L Colao
The recent recognition that Grade 3 (G3) neuroendocrine neoplasms (NEN) can be divided into two different categories according to the histopathological differentiation, i.e. G3 neuroendocrine tumors (NET) and G3 neuroendocrine carcinomas (NEC) has generated a lot of interest concerning not only the diagnosis, but also the differential management of such new group of NEN. However, several issues need to be fully clarified in order to put G3 NET and G3 NEC in the right place. The aim of this review is to focus on those issues that are still undetermined starting from the current knowledge, evaluating the available evidence and the possible clinical implications...
April 18, 2018: Endocrine-related Cancer
https://www.readbyqxmd.com/read/29666945/carbonic-anhydrase-9-expression-in-well-differentiated-pancreatic-neuroendocrine-neoplasms-might-be-associated-with-aggressive-behavior-and-poor-survival
#5
Joo Young Kim, Sang Hwa Lee, Soyeon An, Sung Joo Kim, You-Na Sung, Ki-Byung Song, Dae Wook Hwang, Song Cheol Kim, Seung-Mo Hong
Well-differentiated pancreatic neuroendocrine neoplasms/tumors (PanNETs) are rare neoplasms with diverse clinical behavior. Biomarker discovery is important for predicting clinical course and prognosis of PanNET patients. Carbonic anhydrase 9 (CA9) and vimentin are hypoxia and epithelial-mesenchymal transition-related proteins of which expression in many carcinomas has been associated with poor prognosis, but their significance in PanNET has yet to be determined. We assessed CA9 and vimentin expression in 164 PanNETs and compared this with clinicopathologic characteristics...
April 18, 2018: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/29666783/development-of-neuroendocrine-prostate-cancers-by-the-ser-arg-repetitive-matrix-4-mediated-rna-splicing-network
#6
Ahn R Lee, Nicole Che, Jessica M Lovnicki, Xuesen Dong
While the use of next-generation androgen receptor pathway inhibition (ARPI) therapy has significantly increased the survival of patients with metastatic prostate adenocarcinoma (AdPC), several groups have reported a treatment-resistant mechanism, whereby cancer cells can become androgen receptor (AR) indifferent and gain a neuroendocrine (NE)-like phenotype. This subtype of castration-resistant prostate cancer has been termed "treatment-induced castration-resistant neuroendocrine prostate cancer" (CRPC-NE)...
2018: Frontiers in Oncology
https://www.readbyqxmd.com/read/29665210/endoscopic-ultrasound-diagnosis-of-merkel-cell-carcinoma-metastasizing-to-pancreas
#7
Juliana Pinho, Diana Montezuma, Paula Monteiro, Mário Dinis-Ribeiro, Pedro Bastos
Merkel cell carcinoma (MCC) is a rare and aggressive primary neuroendocrine tumor of the skin, with a high propensity for local, regional and distant spread1 . However, distant metastasis of MCC to the pancreas are rarely seen. EUS-FNA is an effective tool in the evaluation and differential diagnosis of pancreatic mass lesions3 . Differentiating metastatic pancreatic tumors, especially Merkel cell carcinoma, from primary pancreatic tumor will influence clinical management and therapeutic strategies2 . This article is protected by copyright...
April 17, 2018: Cytopathology: Official Journal of the British Society for Clinical Cytology
https://www.readbyqxmd.com/read/29663723/intraocular-metastasis-of-medullary-thyroid-carcinoma-investigated-by-transscleral-fine-needle-aspiration-a-case-report-and-review-of-the-literature
#8
Małgorzata Gajdzis, Nathalie Cassoux, Maria Lesnik, Caroline Hoffmann, Nathalie Badois, Paweł Gajdzis, Jerzy Klijanienko
Medullary thyroid carcinoma occurs in a sporadic setting and may also be inherited in an autosomal dominant fashion, which is related with germline mutations of the RET gene. Metastases are often present at the time of a diagnosis-most frequently within the cervical lymph nodes, followed by the liver, lungs, and bones. Intraocular metastases are extremely rare. We present a case of choroidal metastasis as a first presentation of disease progression in a patient with Multiple Endocrine Neoplasia type 2A syndrome (MEN2A) who had undergone thyroidectomy 33 years earlier for medullary thyroid carcinoma...
April 16, 2018: Diagnostic Cytopathology
https://www.readbyqxmd.com/read/29662560/impact-of-68-ga-dota-peptide-pet-ct-on-the-management-of-gastrointestinal-neuroendocrine-tumour-gi-net-malaysian-national-referral-centre-experience
#9
Teik Hin Tan, Ching Yeen Boey, Boon Nang Lee
Purpose: The National Cancer Institute is the only referral centre in Malaysia that provides 68 Ga-DOTA-peptide imaging. The purpose of this study is to determine the impact of 68 Ga-DOTA-peptide PET/CT on the management of gastrointestinal neuroendocrine tumours (GI-NET). Materials and Methods: A cross-sectional study was performed to review the impact of 68 Ga-DOTA-peptide (68 Ga-DOTATATE or 68 Ga-DOTATOC) PET/CT on patients with biopsy-proven GI-NET between January 2011 and December 2015...
April 2018: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29662318/rare-malignant-insulinoma-with-multiple-liver-metastases-derived-from-ectopic-pancreas-3-year-follow-up-and-literature-review
#10
Qing Liu, Jianghui Duan, Yumin Zheng, Jie Luo, Xiaopin Cai, Huangying Tan
Here, we report the diagnosis and treatment of a very rare case of malignant insulinoma derived from ectopic pancreas. A middle-aged woman presented with a 6-year history of recurrent hypoglycemia with multiple lesions in liver. Admission workup revealed elevated serum insulin and C-peptide, as well as multiple lesions in the liver (largest being 4.3 cm), enlarged lymph nodes around the pancreas, and a lesion (of 3.5 cm) at the proximal jejunum, as shown by contrast computed tomography (CT). Liver biopsy showed the lesions to be well-differentiated neuroendocrine tumors, grade G1...
2018: OncoTargets and Therapy
https://www.readbyqxmd.com/read/29661717/primary-breast-carcinomas-with-neuroendocrine-features-clinicopathological-features-and-analysis-of-tumor-growth-patterns-in-36-cases
#11
Canan Kelten Talu, Cem Leblebici, Tulin Kilicaslan Ozturk, Ezgi Hacihasanoglu, Sevim Baykal Koca, Zuhal Gucin
Primary breast carcinoma with neuroendocrine features (NEBC) is an uncommon tumor. In the classification of WHO 2012, these tumors were categorized as: 1- neuroendocrine tumor, well-differentiated; 2- neuroendocrine carcinoma, poorly differentiated/small cell carcinoma; and 3- invasive breast carcinoma with neuroendocrine differentiation. In this study, we reviewed NEBC except poorly differentiated/small cell carcinoma variant in order to define the morphological growth patterns and cytonuclear details of these tumors...
April 4, 2018: Annals of Diagnostic Pathology
https://www.readbyqxmd.com/read/29656585/adenocarcinoma-in-situ-admixed-with-small-cell-neuroendocrine-carcinoma-of-the-cervix-a-case-report-with-cytological-features
#12
Yukimi Nishiumi, Toshiyuki Nishimura, Ippei Kashu, Takayuki Aoki, Ryoji Itoh, Koji Tsuta, Mitsuaki Ishida
Primary cervical small cell neuroendocrine carcinoma (SCNEC) is a rare and aggressive tumor. Herein, we describe the first cytological case of adenocarcinoma in situ (AIS) admixed with SCNEC. A 65-year-old postmenopausal Japanese female presented with abnormal genital bleeding. The Papanicolaou smear of the cervix demonstrated the presence of 2 distinct neoplastic components in an inflammatory background. One component consisted of aggregates of small round cells with a high nuclear/cytoplasmic ratio and round to oval nuclei with powdery chromatin, and inconspicuous nucleoli...
April 15, 2018: Diagnostic Cytopathology
https://www.readbyqxmd.com/read/29655834/metformin-use-associates-with-longer-progression-free-survival-of-patients-with-diabetes-and-pancreatic-neuroendocrine-tumors-receiving-everolimus-and-or-somatostatin-analogues
#13
Sara Pusceddu, Claudio Vernieri, Massimo Di Maio, Riccardo Marconcini, Francesca Spada, Sara Massironi, Toni Ibrahim, Maria Pia Brizzi, Davide Campana, Antongiulio Faggiano, Dario Giuffrida, Maria Rinzivillo, Sara Cingarlini, Francesca Aroldi, Lorenzo Antonuzzo, Rossana Berardi, Laura Catena, Chiara De Divitiis, Paola Ermacora, Vittorio Perfetti, Annalisa Fontana, Paola Razzore, Carlo Carnaghi, Maria Vittoria Davì, Carolina Cauchi, Marilina Duro, Sergio Ricci, Nicola Fazio, Federica Cavalcoli, Alberto Bongiovanni, Anna La Salvia, Nicole Brighi, Annamaria Colao, Ivana Puliafito, Francesco Panzuto, Silvia Ortolani, Alberto Zaniboni, Francesco Di Costanzo, Mariangela Torniai, Emilio Bajetta, Salvatore Tafuto, Silvio Ken Garattini, Daniela Femia, Natalie Prinzi, Laura Concas, Giuseppe Lo Russo, Massimo Milione, Luca Giacomelli, Roberto Buzzoni, Gianfranco Delle Fave, Vincenzo Mazzaferro, Filippo de Braud
BACKGROUND & AIMS: Metformin seems to have anti-cancer effects. However, it is not clear whether use of glycemia and metformin affect outcomes of patients with advanced pancreatic neuroendocrine tumors (pNETs). We investigated the association between glycemia and progression-free survival (PFS) of patients with NETs treated with everolimus and/or somatostatin analogues, as well as the association between metformin use and PFS time. METHODS: We performed a retrospective analysis of 445 patients with advanced pNET treated at 24 medical centers in Italy, from 1999 through 2015...
April 12, 2018: Gastroenterology
https://www.readbyqxmd.com/read/29650928/-conversion-surgery-after-etoposide-cisplatin-ep-therapy-for-huge-pancreatic-neuroendocrine-carcinoma-a-case-report
#14
Akiko Nakazawa, Tetsuya Mitsui, Yoichi Miyata, Riki Ninomiya, Masahiko Komagome, Akira Maki, Fumiaki Ozawa, Yoshifumi Beck
Neuroendocrine carcinoma(NEC)is known as rapid tumor growth, high grade malignancy and poor prognosis. We report a case of huge pancreatic NEC successfully performed conversion surgery after EP therapy. A 70-year-old female, was presented to our hospital with appetite loss. CT scan revealed huge tumor, 15 cm in diameter, locating at the pancreas with possible involvement to liver, stomach, common hepatic artery, left gastric artery and gastroduodenal artery. Peritoneal dissemination and para-aortic lymph node metastasis were also suspected...
March 2018: Gan to Kagaku Ryoho. Cancer & Chemotherapy
https://www.readbyqxmd.com/read/29650834/-asynchronous-bilateral-neuroendocrine-breast-carcinoma-a-case-report
#15
Kaori Abe, Satoshi Mori, Yumi Koyama, Mayuko Takagi, Keita Adachi, Yukiko Hara, Eiko Waga, Katsuhisa Enomoto, Ryouichi Tomita, Shigeru Fujisaki, Tomohiro Hirano, Kenichi Sakurai
We report a case of asynchronous bilateral neuroendocrine breast carcinoma. The patient was a 49-year-old woman presenting with a bloody nipple discharge from the right breast. We suspected intraductal papilloma and performed a microdochectomy. A pathological analysis of the resected specimen confirmed the diagnosis as neuroendocrine carcinoma. The tumor was positive for estrogen receptor, progesterone receptor, chromogranin A, and synaptophysin, but negative for the HER2/neu marker. The Ki-67 labeling-index was 40%...
April 2018: Gan to Kagaku Ryoho. Cancer & Chemotherapy
https://www.readbyqxmd.com/read/29650526/flushing-disorders-associated-with-gastrointestinal-symptoms-part-2-systemic-miscellaneous-conditions
#16
REVIEW
Vaibhav Rastogi, Devina Singh, Joseph J Mazza, Dennis Yang, Dipendra Parajuli, Steven H Yale
Flushing disorders with involvement of the gastrointestinal tract represent a heterogeneous group of conditions. In part 1 discussed were neuroendocrine tumors (NET), mast cell activation disorders (MCAD), and hyperbasophilia. In this section are covered the remaining flushing disorders which primarily or secondarily involves the gastrointestinal tract. This includes dumping syndrome, mesenteric traction syndrome, rosacea, hyperthyroidism and thyroid storm, anaphylaxis, panic disorders, paroxysmal extreme pain disorder, and food, alcohol and medications...
April 12, 2018: Clinical Medicine & Research
https://www.readbyqxmd.com/read/29650525/flushing-disorders-associated-with-gastrointestinal-symptoms-part-1-neuroendocrine-tumors-mast-cell-disorders-and-hyperbasophila
#17
REVIEW
Vaibhav Rastogi, Devina Singh, Joseph J Mazza, Dennis Yang, Dipendra Parajuli, Steven H Yale
Flushing is the subjective sensation of warmth accompanied by visible cutaneous erythema occurring throughout the body with a predilection for the face, neck, pinnae, and upper trunk where the skin is thinnest and cutaneous vessels are superficially located and in greatest numbers. Flushing can be present in either a wet or dry form depending upon whether neural-mediated mechanisms are involved. Activation of the sympathetic nervous system results in wet flushing, accompanied by diaphoresis, due to concomitant stimulation of eccrine sweat glands...
April 12, 2018: Clinical Medicine & Research
https://www.readbyqxmd.com/read/29649302/identifying-tumor-in-pancreatic-neuroendocrine-neoplasms-from-ki67-images-using-transfer-learning
#18
Muhammad Khalid Khan Niazi, Thomas Erol Tavolara, Vidya Arole, Douglas J Hartman, Liron Pantanowitz, Metin N Gurcan
The World Health Organization (WHO) has clear guidelines regarding the use of Ki67 index in defining the proliferative rate and assigning grade for pancreatic neuroendocrine tumor (NET). WHO mandates the quantification of Ki67 index by counting at least 500 positive tumor cells in a hotspot. Unfortunately, Ki67 antibody may stain both tumor and non-tumor cells as positive depending on the phase of the cell cycle. Likewise, the counter stain labels both tumor and non-tumor as negative. This non-specific nature of Ki67 stain and counter stain therefore hinders the exact quantification of Ki67 index...
2018: PloS One
https://www.readbyqxmd.com/read/29643113/pasireotide-in-the-treatment-of-neuroendocrine-tumors-a-review-of-the-literature
#19
Giovanni Vitale, Alessandra Dicitore, Concetta Sciammarella, Sergio Di Molfetta, Manila Rubino, Antongiulio Faggiano, Annamaria A L Colao
Somatostatin analogs have an important role in the medical therapy of neuroendocrine tumors (NETs). Octreotide and lanreotide, both somatostatin analogs binding with high affinity for the somatostatin receptor (SSTR)2, can control symptoms in functional NETs. In addition, these compounds, because of their antiproliferative effects, can stabilize growth of well-differentiated NETs. Pasireotide is a novel multireceptor-targeted somatostatin analog with high affinity for SSTR1, 2, 3, and 5. This review provides an overview of the state of the art of pasireotide in the treatment of NETs, with the aim of addressing clinical relevance and future perspectives for this molecule in the management of NETs...
April 11, 2018: Endocrine-related Cancer
https://www.readbyqxmd.com/read/29629846/molecular-profiling-of-pancreatic-neuroendocrine-tumors-pnets-and-the-clinical-potential
#20
Massimiliano Camilli, Konstantinos Papadimitrio, Amanda Nogueira, Lorena Incorvaia, Antonio Galvano, Federica D'Antonio, Jose Ferri, Daniele Santini, Nicola Silvestris, Antonio Russo, Marc Peeters, Christian Rolfo
Pancreatic neuroendocrine tumors (pNETs) represent a small part of pancreatic neoplasms, and the knowledge about their indolent clinical course remains a subject of investigation. They occur sporadically or as part of familial cancer syndromes and are classified by WHO in 3 categories. There is ongoing research to understand their molecular profiling and leading mutations. Areas covered: The aim of this review is to clarify the overall aspects of tumorigenesis, to expose the latest developments in understanding the course of the disease and the possible therapeutic implications of these...
April 9, 2018: Expert Review of Gastroenterology & Hepatology
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