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Gastric dysplasia

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https://www.readbyqxmd.com/read/29449092/efficacy-of-narrow-band-imaging-for-detecting-intestinal-metaplasia-in-adult-patients-with-symptoms-of-dyspepsia
#1
S Sobrino-Cossío, J M Abdo Francis, F Emura, E S Galvis-García, M L Márquez Rocha, G Mateos-Pérez, C B González-Sánchez, N Uedo
INTRODUCTION AND OBJECTIVE: Atrophy and intestinal metaplasia are early phenotypic markers in gastric carcinogenesis. White light endoscopy does not allow direct biopsy of intestinal metaplasia due to a lack of contrast of the mucosa. Narrow-band imaging is known to enhance the visibility of intestinal metaplasia, to reduce sampling error, and to increase the diagnostic yield of endoscopy for intestinal metaplasia in Asian patients. The aim of our study was to validate the diagnostic performance of narrow-band imaging using 1...
February 12, 2018: Revista de Gastroenterología de México
https://www.readbyqxmd.com/read/29436014/comparison-of-dysplastic-fundic-gland-polyps-in-patients-with-and-without-familial-adenomatous-polyposis
#2
Shana F Straub, Michael G Drage, Raul S Gonzalez
AIM: Dysplastic FGPs (d-FGPs) typically arise in patients with familial adenomatous polyposis (FAP) but may occur in nonsyndromic patients. They rarely develop malignancy, but their significance is unclear, especially in nonsyndromic patients. APC/β-catenin alterations have been implicated in their pathogenesis, and β-catenin immunohistochemistry (IHC) may show nuclear positivity. METHODS AND RESULTS: We identified 124 FGPs with low-grade dysplasia (LGD) or high-grade dysplasia (HGD) or indefinite for dysplasia (IFD) from 66 patients (27 with FAP, 39 nonsyndromic)...
February 12, 2018: Histopathology
https://www.readbyqxmd.com/read/29433769/endoscopic-submucosal-dissection-as-treatment-for-early-gastric-cancer-experience-at-two-centers-in-lima-peru
#3
J A Chirinos Vega, G Vargas, C Alcántara, J Zapata
INTRODUCTION AND AIMS: The aim of the present study was to evaluate the feasibility of endoscopic submucosal dissection (ESD) and determine the clinical and pathologic characteristics of early gastric cancers and premalignant lesions treated with that technique at the Hospital Nacional of the Department of Health and a private clinic in Lima, Peru. MATERIAL AND METHODS: A descriptive study of all pre-malignant and malignant gastric lesions treated with ESD at the Gastroenterology Service of the Hospital Arzobispo Loayza and the Clínica Angloamericana was conducted within the time frame of January 2012 and January 2017...
February 9, 2018: Revista de Gastroenterología de México
https://www.readbyqxmd.com/read/29410139/significance-of-microcystic-elongated-and-fragmented-glandular-like-features-in-intraductal-papillary-mucinous-neoplasm-of-the-pancreas
#4
Ji Y Park, Jae Hoon Lee, Ki-Byung Song, Dae Wook Hwang, Kyu-Rae Kim, Song Cheol Kim, Seung-Mo Hong
Microcystic, elongated, and fragmented (MELF) glandular features are associated with epithelial-mesenchymal transition, invasion, and progression in endometrioid adenocarcinoma of the uterus. Similar histological features are also observed at the periphery of pancreatic intraductal papillary mucinous neoplasms (IPMNs). However, the clinicopathological significance of MELF-like features-particularly whether they represent regenerative or truly neoplastic conditions-in IPMNs remains unclear. We assessed a total of 152 surgically resected IPMNs...
February 1, 2018: Human Pathology
https://www.readbyqxmd.com/read/29403459/-helicobacter-pylori-and-gastric-cancer-adaptive-cellular-mechanisms-involved-in-disease-progression
#5
REVIEW
Paula Díaz, Manuel Valenzuela Valderrama, Jimena Bravo, Andrew F G Quest
Helicobacter pylori ( H. pylori ) infection is the major risk factor associated with the development of gastric cancer. The transition from normal mucosa to non-atrophic gastritis, triggered primarily by H. pylori infection, initiates precancerous lesions which may then progress to atrophic gastritis and intestinal metaplasia. Further progression to dysplasia and gastric cancer is generally believed to be attributable to processes that no longer require the presence of H. pylori . The responses that develop upon H...
2018: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29373557/autoimmunity-and-gastric-cancer
#6
REVIEW
Nicola Bizzaro, Antonio Antico, Danilo Villalta
Alterations in the immune response of patients with autoimmune diseases may predispose to malignancies, and a link between chronic autoimmune gastritis and gastric cancer has been reported in many studies. Intestinal metaplasia with dysplasia of the gastric corpus-fundus mucosa and hyperplasia of chromaffin cells, which are typical features of late-stage autoimmune gastritis, are considered precursor lesions. Autoimmune gastritis has been associated with the development of two types of gastric neoplasms: intestinal type and type I gastric carcinoid...
January 26, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29334683/epigenetic-silencing-of-the-mlh1-promoter-in-relation-to-the-development-of-gastric-cancer-and-its-use-as-a-biomarker-for-patients-with-microsatellite-instability-a-systematic-analysis
#7
Guimei Hu, Lijun Qin, Xinjun Zhang, Guoliang Ye, Tao Huang
BACKGROUND/AIMS: Human mutL homolog 1 (MLH1) promoter methylation was reported in gastric cancer (GC). This study determined the clinicopathological, prognostic, and diagnostic effects of MLH1 promoter methylation in GC. METHODS: The combined odds ratio (OR) or hazard ratio (HR) and their corresponding 95% confidence intervals (95% CI) were calculated. The pooled sensitivity, specificity, and area under the curve (AUC) were analyzed. RESULTS: A total of 4654 GC patients and 3669 non-malignant controls were identified in this systematic analysis...
January 15, 2018: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29333062/-helicobacter-pylori-infection-and-esophageal-adenocarcinoma-a-review-and-a-personal-view
#8
REVIEW
Stergios A Polyzos, Christos Zeglinas, Fotini Artemaki, Michael Doulberis, Evangelos Kazakos, Panagiotis Katsinelos, Jannis Kountouras
Esophageal adenocarcinoma (EAC) is etiologically associated with gastroesophageal reflux disease (GERD). There is evidence to support the sequence GERD, Barrett's esophagus (BE), dysplasia, and finally EAC, with Helicobacter pylori (H. pylori) being implicated in each step to EAC. On the other side of this relation stands the hypothesis of the protective role of H. pylori against EAC. Based on this controversy, our aim was to review the literature, specifically original clinical studies and meta-analyses linking H...
January 2018: Annals of Gastroenterology: Quarterly Publication of the Hellenic Society of Gastroenterology
https://www.readbyqxmd.com/read/29296239/fhit-down-regulation-was-inversely-linked-to-aggressive-behaviors-and-adverse-prognosis-of-gastric-cancer-a-meta-and-bioinformatics-analysis
#9
Hua-Chuan Zheng, Li-Li Liu
FHIT (fragile histine triad) acts as diadenosine P1, P3-bis (5'-adenosyl)-triphosphate adenylohydrolase involved in purine metabolism, and induces apoptosis as a tumor suppressor. We performed a systematic meta- and bioinformatics analysis through multiple online databases up to March 14, 2017. The down-regulated FHIT expression was found in gastric cancer, compared with normal mucosa and dysplasia (p < 0.05). FHIT expression was negatively with depth of invasion, lymph node metastasis, distant metastasis, TNM staging and dedifferentiation of gastric cancer (p < 0...
December 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/29290911/gastric-endoscopic-submucosal-dissection-as-a-treatment-for-early-neoplasia-and-for-accurate-staging-of-early-cancers-in-a-united-kingdom-caucasian-population
#10
Aisha Sooltangos, Matthew Davenport, Stephen McGrath, Jonathan Vickers, Siba Senapati, Kurshid Akhtar, Regi George, Yeng Ang
AIM: To investigate the efficacy of endoscopic submucosal dissection (ESD) at diagnosing and treating superficial neoplastic lesions of the stomach in a United Kingdom Caucasian population. METHODS: Data of patients treated with or considered for ESD at a tertiary referral center in the United Kingdom were retrieved for a period of 2 years (May 2015 to June 2017) from the electronic patient records of the hospital. Only Caucasian patients were included. Primary outcomes were curative resection (CR) and were defined as ESD resections with clear horizontal and vertical margin and an absence of lympho-vascular invasion, poor differentiation and submucosal involvement on histological evaluation of the resected specimen...
December 16, 2017: World Journal of Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/29290541/genomic-and-epigenomic-profiling-of-high-risk-intestinal-metaplasia-reveals-molecular-determinants-of-progression-to-gastric-cancer
#11
Kie Kyon Huang, Kalpana Ramnarayanan, Feng Zhu, Supriya Srivastava, Chang Xu, Angie Lay Keng Tan, Minghui Lee, Suting Tay, Kakoli Das, Manjie Xing, Aliya Fatehullah, Syed Muhammad Fahmy Alkaff, Tony Kiat Hon Lim, Jonathan Lee, Khek Yu Ho, Steven George Rozen, Bin Tean Teh, Nick Barker, Chung King Chia, Christopher Khor, Choon Jin Ooi, Kwong Ming Fock, Jimmy So, Wee Chian Lim, Khoon Lin Ling, Tiing Leong Ang, Andrew Wong, Jaideepraj Rao, Andrea Rajnakova, Lee Guan Lim, Wai Ming Yap, Ming Teh, Khay Guan Yeoh, Patrick Tan
Intestinal metaplasia (IM) is a pre-malignant condition of the gastric mucosa associated with increased gastric cancer (GC) risk. We performed (epi)genomic profiling of 138 IMs from 148 cancer-free patients, recruited through a 10-year prospective study. Compared with GCs, IMs exhibit low mutational burdens, recurrent mutations in certain tumor suppressors (FBXW7) but not others (TP53, ARID1A), chromosome 8q amplification, and shortened telomeres. Sequencing identified more IM patients with active Helicobacter pylori infection compared with histopathology (11%-27%)...
December 26, 2017: Cancer Cell
https://www.readbyqxmd.com/read/29278427/gastric-pyloric-gland-adenoma-a-multicenter-clinicopathologic-study-of-67-cases
#12
Won-Tak Choi, Ian Brown, Tetsuo Ushiku, Masato Yozu, Namrata Setia, Amitabh Srivastava, Melanie Johncilla, Rish K Pai, Ryan M Gill, Masashi Fukayama, Joseph Misdraji, Gregory Y Lauwers
AIMS: There is limited information regarding the clinicopathologic and immunohistochemical characteristics of gastric pyloric gland adenomas (PGAs). METHODS AND RESULTS: Sixty seven cases of gastric PGA from 57 patients were analyzed. PGAs occurred with similar frequency in men and women (47.4% and 52.6%, respectively) with a mean age of 66 years. Most presented in the gastric body/fundus (67.2%). Fifteen cases (22.4%) developed in a background of autoimmune gastritis (AIG), whereas normal mucosa was seen in 35...
December 26, 2017: Histopathology
https://www.readbyqxmd.com/read/29228128/evaluation-of-a-novel-infra-red-endoscopy-system-in-the-assessment-of-early-neoplasia-in-barretts-esophagus-pilot-study-from-a-single-center
#13
J Ortiz-Fernandez-Sordo, S Sami, R Mansilla-Vivar, V Subramanian, J Mannath, E Telakis, K Ragunath
Infrared endoscopy (IRE) has been shown to be useful in detecting submucosal (SM) invasion in early gastric cancer. Its role in the endoscopic assessment of Barrett's neoplasia has not been reported to date. We aimed in this study to evaluate the role of IRE in the detection and characterization of early neoplastic lesions within Barrett's esophagus (BE). The secondary aim was to explore its usefulness for the assessment of the presence of submucosal invasion in these early neoplastic Barrett's lesions. We included in the study patients with dysplastic BE who were referred to our institution for endoscopic therapy of a previously diagnosed early Barrett's neoplasia...
December 8, 2017: Diseases of the Esophagus: Official Journal of the International Society for Diseases of the Esophagus
https://www.readbyqxmd.com/read/29221215/dnmt1-overexpression-predicting-gastric-carcinogenesis-subsequent-progression-and-prognosis-a-meta-and-bioinformatic-analysis
#14
Tianmiao Ma, Hao Li, Mingjun Sun, Yuan Yuan, Li-Ping Sun
DNMT1 is important in maintaining DNA methylation, and participates in the oncogenesis via up- or down-regulation leading to hyper-methylation or hypo-methylation. In the meta and bioinformatic analysis, we found that DNMT1 expression was higher in gastric cancer, compared with normal (p < 0.00001), para-cancerous (p = 0.0004) and dysplasia (p < 0.00001) tissues. DNMT1 up-regulation was associated with gender (OR = 2.27, p = 0.006), differentiation (OR = 0.21, p = 0.01) and TNM stage (OR = 0.31, p = 0...
November 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/29214514/predictors-of-upstage-diagnosis-after-endoscopic-resection-of-gastric-low-grade-dysplasia
#15
Dae Hwan Kang, Cheol Woong Choi, Hyung Wook Kim, Su Bum Park, Su Jin Kim, Hyeong Seok Nam, Dae Gon Ryu
BACKGROUND: The optimal management of precursor lesions such as gastric low-grade dysplasia is crucial in order to improve gastric cancer-related mortality. However, there are no universally accepted management guidelines regarding which lesions should be resected or should be monitored by follow-up visits. PATIENTS AND METHODS: We retrospectively analyzed data from 1006 gastric low-grade dysplasia lesions that had been resected via endoscopic submucosal dissection...
December 6, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/29211362/clinical-differences-of-helicobacter-pylori-infection-in-children
#16
REVIEW
Barbara M Iwańczak, Anna M Buchner, Franciszek Iwańczak
Helicobacter pylori infection is widely spread all over the world. The prevalence of H. pylori infection in the world varies and depends on numerous factors such as age, ethnicity, geographical and socioeconomic status. Humans have been in a symbiotic relationship with this bacterium for thousands of years. However 10-20% of people infected with H. pylori are likely to develop gastroduodenal diseases such as peptic ulcer disease, iron deficiency anemia, gastric mucosal atrophy, metaplasia, dysplasia, MALT lymphoma, or gastric adenocarcinoma...
October 2017: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
https://www.readbyqxmd.com/read/29209116/gastric-xanthelasma-and-metabolic-disorders-a-large-retrospective-study-among-chinese-population
#17
Yi Chen, Xin-Jue He, Min-Jian Zhou, You-Ming Li
AIM: To gain knowledge of xanthelasma, a large population-based study was conducted. METHODS: Patients who underwent upper gastrointestinal endoscopy at the First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China during Jan 2009 to Nov 2016 were included. General characteristics as well as clinical data were collected, including blood routine, serum biochemical analysis, endoscopic findinds, histological evaluation and comorbiditie. Statistical analyses was performed using SPSS 20...
November 21, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/29208252/sporadic-fundic-gland-polyps-and-gastric-acid-suppression-level
#18
Mohamed Khalaf, Andrew S Brock, Donald Castell
BACKGROUND: Fundic gland polyps (FGPs) are a common endoscopic finding and are known to be associated with proton pump inhibitors (PPIs) use. It is not known if their prevalence is affected by gastric acidity levels. This study aimed to assess whether there is a correlation between FGPs and gastric acidity levels as identified on 24-hour ambulatory impedance-pH studies in patients on PPI therapy. METHODS: We performed a review of 402 consecutive patients who take at least once daily PPI and underwent esophagogastroduodenoscopy with combined impedance-pH studies in the same setting (time and place) between January 2010 and December 2014...
December 2017: American Journal of the Medical Sciences
https://www.readbyqxmd.com/read/29207718/an-alpha-fetoprotein-producing-gastric-tumor-with-yolk-sac-hepatoid-and-papillary-adenocarcinoma-components
#19
Archana Lakshmanan, Ann Kurian, Annapurneswari Subramanyan, Ayyappan Srinivasan
Alpha Fetoprotein (AFP) producing gastric carcinomas are very rare and have unique clinicopathological features and an extremely poor prognosis. Here, we report a case of AFP producing gastric carcinoma with three distinct histomorphologic patterns such as yolk sac like, hepatoid, tubular and papillary adenocarcinoma components. The uniqueness of this case is absence of metastases and associated findings such as fundic gland polyposis with varying degrees of dysplasia, gastric and duodenal well differentiated neuroendocrine tumour and rectal ganglioneuroma...
September 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/29179204/clinical-significance-of-myeloid-zinc-finger-1-expression-in-the-progression-of-gastric-tumourigenesis
#20
Guo-Qiang Li, Qing He, Lang Yang, Shu-Bin Wang, De-Dong Yu, Yu-Qi He, Jiang Hu, Yuan-Ming Pan, Yun Wu
BACKGROUND/AIMS: To investigate the clinical significance of myeloid zinc finger 1 (MZF1) expression in various gastric mucosal lesions including chronic superficial gastritis (CSG), chronic atrophic gastritis (CAG), intestinal metaplasia (IM), dysplasia (DYS) and gastric cancer (GC) in comparison with normal tissues and gastric cell lines. METHODS: MZF1 protein expression was detected using immunohistochemical staining in 37 CSG, 88 CAG, 77 IM, 51 DYS, 165 GC and 8 normal tissue samples...
November 28, 2017: Cellular Physiology and Biochemistry
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