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https://www.readbyqxmd.com/read/28092495/nonhypervascular-pancreatic-neuroendocrine-tumors-differential-diagnosis-from-pancreatic-ductal-adenocarcinomas-at-mr-imaging-retrospective-cross-sectional-study
#1
Sun Kyung Jeon, Jeong Min Lee, Ijin Joo, Eun Sun Lee, Hyun Jeong Park, Jin-Young Jang, Ji Kon Ryu, Kyung Bun Lee, Joon Koo Han
Purpose To determine useful magnetic resonance (MR) imaging features to differentiate nonhypervascular pancreatic neuroendocrine tumors (PNETs) from pancreatic ductal adenocarcinomas (PDACs). Materials and Methods The institutional review board approved this retrospective study and waived the informed consent requirement. Seventy-four patients with surgically confirmed PNETs and 82 patients with PDACs who underwent gadobutrol-enhanced MR imaging were included. Two radiologists independently evaluated the morphologic characteristics and temporal enhancement patterns of each tumor...
January 13, 2017: Radiology
https://www.readbyqxmd.com/read/28089889/myc-drives-progression-of-small-cell-lung-cancer-to-a-variant-neuroendocrine-subtype-with-vulnerability-to-aurora-kinase-inhibition
#2
Gurkan Mollaoglu, Matthew R Guthrie, Stefanie Böhm, Johannes Brägelmann, Ismail Can, Paul M Ballieu, Annika Marx, Julie George, Christine Heinen, Milind D Chalishazar, Haixia Cheng, Abbie S Ireland, Kendall E Denning, Anandaroop Mukhopadhyay, Jeffery M Vahrenkamp, Kristofer C Berrett, Timothy L Mosbruger, Jun Wang, Jessica L Kohan, Mohamed E Salama, Benjamin L Witt, Martin Peifer, Roman K Thomas, Jason Gertz, Jane E Johnson, Adi F Gazdar, Robert J Wechsler-Reya, Martin L Sos, Trudy G Oliver
Loss of the tumor suppressors RB1 and TP53 and MYC amplification are frequent oncogenic events in small cell lung cancer (SCLC). We show that Myc expression cooperates with Rb1 and Trp53 loss in the mouse lung to promote aggressive, highly metastatic tumors, that are initially sensitive to chemotherapy followed by relapse, similar to human SCLC. Importantly, MYC drives a neuroendocrine-low "variant" subset of SCLC with high NEUROD1 expression corresponding to transcriptional profiles of human SCLC. Targeted drug screening reveals that SCLC with high MYC expression is vulnerable to Aurora kinase inhibition, which, combined with chemotherapy, strongly suppresses tumor progression and increases survival...
December 31, 2016: Cancer Cell
https://www.readbyqxmd.com/read/28089436/the-significance-of-histologic-examination-of-gastrectomy-specimens-a-clinicopathologic-study-of-511-cases
#3
Pavel Kopach, Elizabeth M Genega, Sajani N Shah, Julie J Kim, Yvelisse Suarez
BACKGROUND: Sleeve gastrectomy (SG) is quickly becoming the preferred procedure for bariatric surgery. According to the American Society for Metabolic and Bariatric Surgery guidelines, routine preoperative upper gastrointestinal endoscopies are not recommended universally for bariatric surgery. Some studies have shown that the histologic examination of SG specimens is insignificant and not a cost-effective practice. However, some speculate SG examination may unveil pertinent findings and prevent further progression of precursor lesions...
November 15, 2016: Surgery for Obesity and related Diseases: Official Journal of the American Society for Bariatric Surgery
https://www.readbyqxmd.com/read/28089247/-mid-gut-neuroendocrine-tumors-news-on-medical-treatment
#4
Marie Dior, Johann Dreanic, Caroline Prieux-Klotz, Bertrand Brieau, Catherine Brezault, Romain Coriat
CONTEXT: Mid gut neuroendocrine tumors (NET) are rare tumors whose incidence is increasing. Curative surgery remains the gold standard for the treatment of NETs of the small intestine. Surgery should be considered as soon as possible even if a metastatic stage is diagnosed. The management of unresectable well-differentiated metastatic NETs of the small intestine recently changed with the publication of trials demonstrating the benefit of targeted therapies and metabolic radiotherapy, leading to a change of practices and update of French and international recommendations...
January 11, 2017: La Presse Médicale
https://www.readbyqxmd.com/read/28088602/aggressive-surgical-approach-to-the-management-of-neuroendocrine-tumors-a-report-of-1-000-surgical-cytoreductions-by-a-single-institution
#5
Eugene A Woltering, Brianne A Voros, David T Beyer, Yi-Zarn Wang, Ramcharan Thiagarajan, Pamela Ryan, Anne Wright, Robert A Ramirez, M Jennifer Ricks, J Philip Boudreaux
BACKGROUND: Neuroendocrine tumors (NETs) are rare neoplasms. Our group has treated over 2,000 NET patients and has performed over 1,000 surgical cytoreductive procedures. STUDY DESIGN: Records of 834 NET patients who underwent surgical cytoreduction at our institution were reviewed. Demographic information, intraoperative findings, extent of disease, complications, and survival rates were calculated. RESULTS: 800 patients underwent 1,001 cytoreductive surgeries...
January 11, 2017: Journal of the American College of Surgeons
https://www.readbyqxmd.com/read/28088513/an-immunogram-for-the-cancer-immunity-cycle-towards-personalized-immunotherapy-of-lung-cancer
#6
Takahiro Karasaki, Kazuhiro Nagayama, Hideki Kuwano, Jun-Ichi Nitadori, Masaaki Sato, Masaki Anraku, Akihiro Hosoi, Hirokazu Matsushita, Yasuyuki Morishita, Kosuke Kashiwabara, Masaki Takazawa, Osamu Ohara, Kazuhiro Kakimi, Jun Nakajima
INTRODUCTION: The interaction of immune cells and cancer cells shapes the immunosuppressive tumor microenvironment. For successful cancer immunotherapy, comprehensive knowledge of anti-tumor immunity as a dynamic spacio-temporal process is required for each individual patient. To this end, we developed an immunogram for the cancer-immunity cycle using next-generation sequencing. METHODS: Whole-exome sequencing and RNA-Seq was performed in 20 non-small cell lung cancer patients (12 adenocarcinoma, 7 squamous cell carcinoma, and 1 large cell neuroendocrine carcinoma)...
January 11, 2017: Journal of Thoracic Oncology
https://www.readbyqxmd.com/read/28087475/immunohistochemical-approach-for-the-diagnosis-of-a-liver-mass-on-small-biopsy-specimens
#7
Won-Tak Choi, Rageshree Ramachandran, Sanjay Kakar
Well-differentiated hepatocellular carcinoma (HCC) shares overlapping histological features with benign hepatocellular lesions, including hepatocellular adenoma (HCA) and focal nodular hyperplasia (FNH) in non-cirrhotic liver, and with high-grade dysplastic nodule (HGDN) in cirrhotic liver. Several metastatic tumors, such as neuroendocrine tumor, renal cell carcinoma, adrenocortical carcinoma, melanoma, and epithelioid angiomyolipoma, can be indistinguishable from HCC on histologic grounds. Since this distinction has important therapeutic implications, judicious use of immunohistochemical markers plays an important role in establishing an accurate diagnosis, especially when limited material of tumor is available on cell block or a small core biopsy...
January 10, 2017: Human Pathology
https://www.readbyqxmd.com/read/28087162/mir-24-inhibition-increases-menin-expression-and-decreases-cholangiocarcinoma-proliferation
#8
Laurent Ehrlich, Chad Hall, Julie Venter, David Dostal, Francesca Bernuzzi, Pietro Invernizzi, Fanyin Meng, Jerome P Trzeciakowski, Tianhao Zhou, Holly Standeford, Gianfranco Alpini, Terry C Lairmore, Shannon Glaser
Menin (MEN1) is a tumor-suppressor protein in neuroendocrine tissue. Because cholangiocytes can take on a neuroendocrine phenotype, we tested the novel hypothesis that menin regulates cholangiocarcinoma proliferation. Menin and miR-24 expression levels were measured in the following intrahepatic and extrahepatic cholangiocarcinoma (CCA) cell lines, Mz-ChA-1, TFK-1, SG231, CCLP, HuCCT-1, and HuH-28, as well as the nonmalignant human intrahepatic biliary line, H69. miR-24 miRNA and menin protein levels were manipulated in vitro in Mz-ChA-1 cell lines...
January 10, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28081332/surgical-management-of-large-cell-neuroendocrinelung-carcinoma-an-analysis-of-25-cases
#9
Funda İncekara, Koray Aydoğdu, Ebru Sayılır, Selim Şakir Erkmen Gülhan, Funda Demirağ, Sadi Kaya, Göktürk Fındık
BACKGROUND/AIM: Large-cell neuroendocrine carcinoma (LCNEC) of the lung is a relatively uncommon and aggressive subset of pulmonary neuroendocrine tumors, which include typical and atypical carcinoid, and small-cell lung cancer. LCNEC of the lung accounts for no more than 1% of all lung cancers. LCNECs show features of high-grade neuroendocrine tumors and patients with LCNEC have a very poor prognosis. MATERIALS AND METHODS: Twenty-five patients (22 males and 3 females; mean years 60...
December 20, 2016: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/28079577/transdifferentiation-of-neuroendocrine-cells-gangliocytoma-associated-with-two-pituitary-adenomas-of-different-lineage-in-men1
#10
Camille Sergeant, Christel Jublanc, Delphine Leclercq, Anne-Laure Boch, Franck Bielle, Gerald Raverot, Adrian F Daly, Jacqueline Trouillas, Chiara Villa
Gangliocytomas are rare and benign neuronal cell tumors, mostly found in the hypothalamic and sellar regions. Their histogenesis is still the subject of discussions. Herein we present a unique case of a pituitary gangliocytoma associated with a prolactinoma and a corticotroph adenoma in a patient affected by MEN1. The histologic study revealed shared features between adenomatous and neuronal cells, supporting the etiological hypothesis of a common origin or a phenomenon of transdifferentiation. Furthermore, gangliocytoma could be a new tumor related to MEN1...
January 10, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28079576/mixed-gangliocytoma-pituitary-adenoma-insights-on-the-pathogenesis-of-a-rare-sellar-tumor
#11
M Beatriz S Lopes, Emily Sloan, Julie Polder
Gangliocytomas originating in the sellar region are rare; most are tumors composed of gangliocytic and pituitary adenomatous elements, forming the so-called mixed gangliocytoma-pituitary adenoma. The majority of mixed gangliocytoma adenomas are associated with endocrinopathies, mainly acromegaly and less often Cushing disease and hyperprolactinemia. In the present study, 10 cases of mixed gangliocytoma and somatotroph adenomas were evaluated for patterns of cellular differentiation and expression of lineage-specific transcription factors...
January 10, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28079231/primary-neuroendocrine-neoplasm-of-the-esophagus-report-of-14-cases-from-a-single-institute-and-review-of-the-literature
#12
Francisco Tustumi, Flavio Roberto Takeda, Rodrigo Hideki Uema, Guilherme Luiz Stelko Pereira, Rubens Antonio Aissar Sallum, Ivan Cecconello
BACKGROUND: Most prevalent esophageal neoplasm is squamous cell carcinoma and adenocarcinoma. Other tumors are uncommon and poorly studied. Primary neuroendocrine esophageal neoplasm is a rare carcinoma and most of its therapy management is based on lung neuroendocrine studies. Neuroendocrine tumors can be clustered in the following subtypes: high grade (small cell carcinoma or large cell carcinoma) and low grade (carcinoids). OBJECTIVE: The present study aims to assess clinical and pathological neuroendocrine esophageal tumors in a single oncologic center...
January 2017: Arquivos de Gastroenterologia
https://www.readbyqxmd.com/read/28078467/clinical-characteristics-risk-factors-and-outcomes-of-asymptomatic-rectal-neuroendocrine-tumors
#13
Sun-Hye Ko, Myong Ki Baeg, Seung Yeon Ko, Hee Sun Jung
BACKGROUND: Rectal neuroendocrine tumors (NET) are often asymptomatic and frequently discovered during health examinations. However, data on the risk factors of asymptomatic rectal NETs are lacking. We investigated the risk factors, clinical characteristics and outcomes of asymptomatic rectal NETs discovered during health screening. MATERIALS AND METHODS: Asymptomatic subjects who underwent colonoscopy during routine health screening at a tertiary hospital from March 2009 to July 2014 were reviewed...
January 11, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28078115/usefulness-and-feasibility-of-endoscopic-submucosal-dissection-for-colorectal-tumor-a-nationwide-multicenter-retrospective-study-in-korea
#14
Ji Hye Kim, Il Hyun Baek, Kyoung Oh Kim, Hyun Joo Jang, Gwang Ho Baik, Chang Kyun Lee, Kyeong Won Min
BACKGROUND: Detection rate of precursor lesion of colorectal cancer and early colon cancer have recently been rising because of increased screening endoscopy and increased incidence of colorectal cancer. Endoscopic submucosal dissection (ESD) technique has been reported to be useful in the treatment of such superficial lesions in colon. However, nationwide multicenter study for usefulness and feasibility of colorectal ESD is still limited. METHODS: From January 2009 to February 2014, colorectal ESD data performed at nationwide university hospitals were enrolled in retrospective design...
December 2016: Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/28078110/radioembolization-with-90-y-glass-microspheres-for-the-treatment-of-unresectable-metastatic-liver-disease-from-chemotherapy-refractory-gastrointestinal-cancers-final-report-of-a-prospective-pilot-study
#15
Nicholas Fidelman, Robert K Kerlan, Randall A Hawkins, Miguel Pampaloni, Andrew G Taylor, Maureen P Kohi, K Pallav Kolli, Chloe E Atreya, Emily K Bergsland, R Kate Kelley, Andrew H Ko, W Michael Korn, Katherine Van Loon, Ryan M McWhirter, Jennifer Luan, Curt Johanson, Alan P Venook
BACKGROUND: This prospective pilot single-institution study was undertaken to document the feasibility, safety, and efficacy of radioembolization of liver-dominant metastatic gastrointestinal cancer using (90)Y glass microspheres. METHODS: Between June 2010 and October 2013, 42 adult patients (26 men, 16 women; median age 60 years) with metastatic chemotherapy-refractory unresectable colorectal (n=21), neuroendocrine (n=11), intrahepatic bile duct (n=7), pancreas (n=2), and esophageal (n=1) carcinomas underwent 60 lobar or segmental administrations of (90)Y glass microspheres...
December 2016: Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/28076709/phase-3-trial-of-177-lu-dotatate-for-midgut-neuroendocrine-tumors
#16
Jonathan Strosberg, Ghassan El-Haddad, Edward Wolin, Andrew Hendifar, James Yao, Beth Chasen, Erik Mittra, Pamela L Kunz, Matthew H Kulke, Heather Jacene, David Bushnell, Thomas M O'Dorisio, Richard P Baum, Harshad R Kulkarni, Martyn Caplin, Rachida Lebtahi, Timothy Hobday, Ebrahim Delpassand, Eric Van Cutsem, Al Benson, Rajaventhan Srirajaskanthan, Marianne Pavel, Jaime Mora, Jordan Berlin, Enrique Grande, Nicholas Reed, Ettore Seregni, Kjell Öberg, Maribel Lopera Sierra, Paola Santoro, Thomas Thevenet, Jack L Erion, Philippe Ruszniewski, Dik Kwekkeboom, Eric Krenning
Background Patients with advanced midgut neuroendocrine tumors who have had disease progression during first-line somatostatin analogue therapy have limited therapeutic options. This randomized, controlled trial evaluated the efficacy and safety of lutetium-177 ((177)Lu)-Dotatate in patients with advanced, progressive, somatostatin-receptor-positive midgut neuroendocrine tumors. Methods We randomly assigned 229 patients who had well-differentiated, metastatic midgut neuroendocrine tumors to receive either (177)Lu-Dotatate (116 patients) at a dose of 7...
12, 2017: New England Journal of Medicine
https://www.readbyqxmd.com/read/28075042/protein-induced-by-vitamin-k-absence-or-antagonist-ii-pivka-ii-producing-large-cell-neuroendocrine-carcinoma-lcnec-of-lung-with-multiple-liver-metastases-a-case-report
#17
Hirokazu Kurohama, Yumi Mihara, Yasumori Izumi, Masatsugu Kamata, Seiji Nagashima, Atsumasa Komori, Yojiro Matsuoka, Nozomi Ueki, Masahiro Nakashima, Masahiro Ito
A 78-year-old man was admitted to our hospital for multiple lung and liver tumors. Initial clinical diagnosis was hepatocellular carcinoma (HCC) with lung metastases because of a high value of serum protein induced by vitamin K absence or antagonist II (PIVKA-II) (6,705 mAU/mL). However, a review of a prior CT showed the lung tumor had existed 6 months before liver tumors were detected. The tumors progressed rapidly and the patient died 37 days after admission. Autopsy revealed that both lung and liver tumors exhibited the histology of large cell neuroendocrine carcinoma (LCNEC)...
January 11, 2017: Pathology International
https://www.readbyqxmd.com/read/28074442/undifferentiated-carcinoma-of-the-liver-a-case-report-with-immunohistochemical-analysis
#18
Takashi Maeda, Hiroto Kayashima, Daisuke Imai, Kazuki Takeishi, Noboru Harada, Eiji Tsujita, Ayumi Matsuyama, Shinichi Tsutsui, Hiroyuki Matsuda
BACKGROUND: Undifferentiated carcinoma (UC) of the liver is extremely rare, and its clinicopathological characteristics have not been fully elucidated. CASE PRESENTATION: The present study reports the case of a 56-year-old male with UC of the liver. At 16 days post-admission, the patient suddenly succumbed due to intra-abdominal bleeding resulting from a ruptured liver. Macroscopic examination revealed that the hepatic parenchyma was almost completely replaced by innumerable minute nodules...
December 2017: Surgical Case Reports
https://www.readbyqxmd.com/read/28072969/-pathologic-consensus-of-pulmonary-neuroendocrine-tumors
#19
(no author information available yet)
No abstract text is available yet for this article.
January 8, 2017: Zhonghua Bing Li Xue za Zhi Chinese Journal of Pathology
https://www.readbyqxmd.com/read/28072620/fibrous-dysplasia-mimicking-malignancy-on-68ga-dotatate-pet-ct
#20
Georgios Z Papadakis, Corina Millo, Samira M Sadowski, Apostolos H Karantanas, Ulas Bagci, Nicholas J Patronas
Fibrous dysplasia of the bone is a developmental benign skeletal disorder characterized by replacement of normal bone and normal bone marrow with abnormal fibro-osseous tissue. We report on a case of a biopsy-proven fibrous dysplasia lesion in the left temporal bone, with intensely increased activity (SUVmax, 56.7) on Ga-DOTATATE PET/CT. The presented data indicate cell surface overexpression of somatostatin receptors by fibrous dysplastic cells and highlight the need of cautious management of Ga-DOTATATE-avid bone lesions, which could mimic malignancy especially in patients with history of neuroendocrine tumors...
January 9, 2017: Clinical Nuclear Medicine
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