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esophagus development

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https://www.readbyqxmd.com/read/29049027/atlas-ranking-and-selection-for-automatic-segmentation-of-the-esophagus-from-ct-scans
#1
Jinzhong Yang, Benjamin Haas, Raymond Fang, Beth B Beadle, Adam S Garden, Zhongxing Liao, Lifei Zhang, Peter A Balter, Laurence E Court
In radiation treatment planning, the esophagus is an important organ-at-risk that should be spared in patients with head and neck cancer or thoracic cancer who undergo intensity-modulated radiation therapy. However, automatic segmentation of the esophagus from CT scans is extremely challenging because of the structure's inconsistent intensity, low contrast against the surrounding tissues, complex and variable shape and location, and random air bubbles. The goal of this study is to develop an online atlas selection approach to choose a subset of optimal atlases for multi-atlas segmentation to delineate esophagus automatically...
October 19, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/29046735/identification-of-a-key-role-of-widespread-epigenetic-drift-in-barrett-s-esophagus-and-esophageal-adenocarcinoma
#2
E Georg Luebeck, Kit Curtius, William D Hazelton, Sean Maden, Ming Yu, Prashanthi N Thota, Deepa T Patil, Amitabh Chak, Joseph E Willis, William M Grady
BACKGROUND: Recent studies have identified age-related changes in DNA methylation patterns in normal and cancer tissues in a process that is called epigenetic drift. However, the evolving patterns, functional consequences, and dynamics of epigenetic drift during carcinogenesis remain largely unexplored. Here we analyze the evolution of epigenetic drift patterns during progression from normal squamous esophagus tissue to Barrett's esophagus (BE) to esophageal adenocarcinoma (EAC) using 173 tissue samples from 100 (nonfamilial) BE patients, along with publically available datasets including The Cancer Genome Atlas (TCGA)...
2017: Clinical Epigenetics
https://www.readbyqxmd.com/read/29043074/recent-advances-in-eosinophilic-esophagitis
#3
REVIEW
Sandy Durrani, Marc Rothenberg
Eosinophilic esophagitis is a chronic, antigen-driven, eosinophil-predominant inflammatory disease of the esophagus and affects both children and adults. Cutting-edge technologies, such as genome-wide association studies, have advanced our understanding of the disease pathogenesis at a remarkable rate. Recent insights from genetic and mechanistic studies have concluded that a complex interplay between genetic and environmental risk factors, allergic sensitization, and esophageal-specific pathways leads to disease pathogenesis...
2017: F1000Research
https://www.readbyqxmd.com/read/29037470/pathophysiology-of-gastroesophageal-reflux-disease
#4
Jan Tack, John E Pandolfino
The pathogenesis of gastroesophageal reflux disease (GERD) is complex and involves changes in reflux exposure, epithelial resistance, and visceral sensitivity. The gastric refluxate is a noxious material that injures the esophagus and elicits symptoms. Esophageal exposure to gastric refluxate is the primary determinant of disease severity. This exposure arises via compromise of the anti-reflux barrier and reduced ability of the esophagus to clear and buffer the refluxate, leading to reflux disease. However, complications and symptoms also occur in the context of normal reflux burden, when there is either poor epithelial resistance or increased visceral sensitivity...
October 13, 2017: Gastroenterology
https://www.readbyqxmd.com/read/29037469/management-of-patients-with-adenocarcinoma-or-squamous-cancer-of-the-esophagus
#5
David H Ilson, Richard Hillegersberg
Esophageal cancer is characterized by the early and frequent metastasis. Surgery is the primary treatment for early-stage disease, whereas patients with patients with locally advanced disease receive peri-operative chemotherapy or chemoradiotherapy. Squamous cancers can be treated with primary chemoradiotherapy without surgery, depending on their response to therapy and patient tolerance for subsequent surgery. Chemotherapy with a fluorinated pyrimidine and a platinum agent, followed by later treatment with taxanes and irinotecan, provides some benefit...
October 13, 2017: Gastroenterology
https://www.readbyqxmd.com/read/29037468/insights-into-the-pathophysiology-of-esophageal-adenocarcinoma
#6
Michael Quante, Trevor A Graham, Marnix Jansen
Although researchers have identified genetic alterations that contribute to development of esophageal adenocarcinoma, we know little about features of patients or environmental factors that mediate progression of chronic acid biliary reflux to Barrett's esophagus and cancer. Increasing our understanding of the mechanisms by which normal squamous epithelium progresses to early-stage invasive cancer will help formulate rational surveillance guidelines and allow us to divest resources away from patients at low risk of malignancy...
October 13, 2017: Gastroenterology
https://www.readbyqxmd.com/read/29036278/perceptions-of-risk-and-therapy-among-patients-with-barrett-s-esophagus-a-patient-survey-study
#7
M W Stier, N Lodhia, J Jacobs, D Nozicka, R Kavitt, U Siddiqui, I Waxman, V J Konda
Nondysplastic Barrett's esophagus has a risk of progression to esophageal adenocarcinoma as low as 0.18-0.3% per person per year, and low-grade dysplasia as low as 0.5%. While adherence to guidelines and selection of management options varies, little is known about what modifies patient decision-making. This study aims to evaluate and identify factors that influence patient perceptions of risk and decisions about management. An independently developed and piloted survey was administered to patients at an academic hospital...
September 21, 2017: Diseases of the Esophagus: Official Journal of the International Society for Diseases of the Esophagus
https://www.readbyqxmd.com/read/29033556/swallowing-difficulties-with-medication-intake-assessed-with-a-novel-self-report-questionnaire-in-patients-with-systemic-sclerosis-a-cross-sectional-population-study
#8
Markus Messerli, Rebecca Aschwanden, Michael Buslau, Kurt E Hersberger, Isabelle Arnet
OBJECTIVES: To assess subjective swallowing difficulties (SD) with medication intake and their practical consequences in patients suffering from systemic sclerosis (SSc) with a novel self-report questionnaire. DESIGN AND SETTING: Based on a systematic literature review, we developed a self-report questionnaire and got it approved by an expert panel. Subsequently, we sent the questionnaire by post mail to SSc patients of the European Center for the Rehabilitation of Scleroderma Rheinfelden, Switzerland...
2017: Patient Preference and Adherence
https://www.readbyqxmd.com/read/29019566/preoperative-manometry-for-the-selection-of-obese-people-candidate-to-sleeve-gastrectomy
#9
Antonio Carlos Valezi, Fernando Augusto Herbella, Jorge Mali-Junior, Mariano de Almeida Menezes, Mário Liberatti, Rafael Onuki Sato
BACKGROUND: Sleeve gastrectomy may alter esophageal motility and lower esophageal sphincter pressure. AIM: To detect manometric changings in the esophagus and lower esophageal sphincter before and after sleeve gastrectomy in order to select patients who could develop postoperative esophageal motilitity disorders and lower esophageal sphincter pressure modifications. METHODS: Seventy-three patients were selected. All were submitted to manometry before the operation and one year after...
July 2017: Arquivos Brasileiros de Cirurgia Digestiva: ABCD, Brazilian Archives of Digestive Surgery
https://www.readbyqxmd.com/read/29016405/definition-of-barrett-esophagus-in-the-united-states-support-for-retention-of-a-requirement-for-goblet-cells
#10
Kevan J Salimian, Kevin M Waters, Ogechukwu Eze, Maryam K Pezhouh, Yaman Tarabishy, Eun-Ji Shin, Marcia I Canto, Lysandra Voltaggio, Elizabeth A Montgomery
Barrett esophagus (BE) predisposes patients to the development of esophageal adenocarcinoma (EAC). However, the global definition of BE is controversial. Pathologists in Europe and the United States require intestinal metaplasia (IM) within columnar-lined mucosa (CLM) in the tubular esophagus to diagnose BE, whereas in the UK and Japan only the presence of CLM is required. To aid in establishing an appropriate definition for BE, we evaluated whether IM accompanies EAC in a US patient cohort. We examined a series of 139 consecutive patients who underwent endoscopic mucosal resections or esophagectomies for EAC performed at a US tertiary care center...
October 9, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28981449/using-serum-ige-antibodies-to-predict-esophageal-eosinophilia-in-children
#11
Elizabeth A Erwin, Dale A Rhoda, Margaret Redmond, Jean B Ly, John M Russo, Ivor D Hill, Thomas A E Platts-Mills
OBJECTIVES: Symptoms of eosinophilic esophagitis (EoE) are variable and can be nonspecific. Food-specific serum IgE antibodies are frequently found in EoE patients and are obtained using a widely available blood test. Our objective was to evaluate the ability of food-specific IgE antibodies to predict the presence of esophageal eosinophilia. METHODS: We reviewed 144 medical records for pediatric patients having esophageal biopsy and serum analysis for IgE antibodies to food (exploratory group)...
February 22, 2017: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/28976874/paraesophageal-hernia-as-a-cause-of-chronic-asymptomatic-anemia-in-a-6-years-old-boy-case-report-and-review-of-the-literature
#12
Dimitrios Patoulias, Maria Kalogirou, Thomas Feidantsis, Ignatios Kallergis, Ioannis Patoulias
Esophageal hiatal hernia is defined as the prolapse of one or more intra-abdominal organs through the esophageal hiatus. Four types are identified: type Ι or sliding hiatal hernia, type II or paraesophageal hernia (PEH), type III or mixed hernia and type IV. Congenital type II esophageal hiatal hernia is caused by a remaining gap after the formation of pleuroperitoneal membrane. We present a case of a six years old boy admitted to our department, appearing with asymptomatic anemia, who was incidentally diagnosed with Type II esophageal hiatal hernia...
2017: Acta Medica (Hradec Králové)
https://www.readbyqxmd.com/read/28974854/magnitude-impact-and-management-of-respiration-induced-target-motion-in-radiotherapy-treatment-a-comprehensive-review
#13
REVIEW
S A Yoganathan, K J Maria Das, Arpita Agarwal, Shaleen Kumar
Tumors in thoracic and upper abdomen regions such as lungs, liver, pancreas, esophagus, and breast move due to respiration. Respiration-induced motion introduces uncertainties in radiotherapy treatments of these sites and is regarded as a significant bottleneck in achieving highly conformal dose distributions. Recent developments in radiation therapy have resulted in (i) motion-encompassing, (ii) respiratory gating, and (iii) tracking methods for adapting the radiation beam aperture to account for the respiration-induced target motion...
July 2017: Journal of Medical Physics
https://www.readbyqxmd.com/read/28972007/association-between-cigar-or-pipe-smoking-and-cancer-risk-in-men-a-pooled-analysis-of-five-cohort-studies
#14
Jyoti Malhotra, Claire Borron, Neal D Freedman, Christian C Abnet, Piet A van den Brandt, Emily White, Roger L Milne, Graham G Giles, Paolo Boffetta
INTRODUCTION: Use of non-cigarette tobacco products such as cigars and pipe has been increasing even though these products entail exposure to similar carcinogens to those in cigarettes. More research is needed to explore the risk of these products to guide cancer prevention efforts. METHODS: To measure the association between cigars and/or pipe smoking, and cancer incidence in men, we performed meta-analyses of data from five prospective cohorts. Cox regression was used to evaluate the association between different aspects of cigars and pipe smoking and risk of each smoking-related cancer (head & neck, esophagus, lung, stomach, liver, pancreas, kidney, bladder) for each study...
September 28, 2017: Cancer Prevention Research
https://www.readbyqxmd.com/read/28970723/high-yield-reproducible-rat-model-recapitulating-human-barrett-s-carcinogenesis
#15
Daisuke Matsui, Ashten N Omstead, Juliann E Kosovec, Yoshihiro Komatsu, Emily J Lloyd, Hailey Raphael, Ronan J Kelly, Ali H Zaidi, Blair A Jobe
AIM: To efficiently replicate the biology and pathogenesis of human esophageal adenocarcinoma (EAC) using the modified Levrat model of end-to-side esophagojejunostomy. METHODS: End-to-side esophagojejunostomy was performed on rats to induce gastroduodenoesophageal reflux to develop EAC. Animals were randomly selected and serially euthanized at 10 (n = 6), 17 (n = 8), 24 (n = 9), 31 (n = 6), 38 (n = 6), and 40 (n = 6) wk postoperatively. The esophagi were harvested for downstream histopathology and gene expression...
September 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28962198/analysis-of-risk-factors-for-post-operative-complications-and-prognostic-predictors-of-disease-recurrence-following-definitive-treatment-of-patients-with-esophageal-cancer-from-two-medical-centers-in-northwest-china
#16
Jichang Wang, Boxiang Zhang, Jinying Meng, Guodong Xiao, Xiang Li, Gang Li, Sida Qin, Ning Du, Jia Zhang, Jing Zhang, Chongwen Xu, Shou-Ching Tang, Rui Liang, Hong Ren, Xin Sun
Evaluating the clinicopathological features of patients receiving definitive treatment for esophageal cancer may facilitate the identification of patterns and factors associated with post-operative complications, and enable the development of a surveillance strategy for surviving patients at a higher risk of disease recurrence. In the present study, clinical data from 579 patients with esophageal cancer that underwent radical resection of esophagus were collected. These patients were admitted to two medical centers in Northwest China, and information regarding the presence or absence of basic chronic diseases and post-operative results were retrospectively analyzed...
September 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28952239/hallmarks-in-history-of-esophageal-carcinoma
#17
Marianna Karamanou, Kostas Markatos, Theodoros G Papaioannou, George Zografos, George Androutsos
Esophageal cancer is one of the deadliest cancers due to its aggressive behavior and poor survival. It was mentioned in the works of ancient Chinese and Arabo-islamic physicians, centuries before the recognition of high incidence in the Asian esophageal cancer belt. Till the 19th century the disease was considered incurable and the main goal of the proposed treatments was to alleviate dysphagia and pain. The introduction of esophagoscope in 1868 by Adolf Kussmaul (1822-1902) contributed to the observation of the living esophagus and to the diagnosis of esophageal pathologies, paving the way for new therapeutic approaches...
July 2017: Journal of B.U.ON.: Official Journal of the Balkan Union of Oncology
https://www.readbyqxmd.com/read/28947480/esophageal-injury-and-atrioesophageal-fistula-caused-by-ablation-for-atrial-fibrillation
#18
REVIEW
Sunil Kapur, Chirag Barbhaiya, Thomas Deneke, Gregory F Michaud
Esophageal perforation is a dreaded complication of atrial fibrillation ablation that occurs in 0.1% to 0.25% of atrial fibrillation ablation procedures. Delayed diagnosis is associated with the development of atrial-esophageal fistula (AEF) and increased mortality. The relationship between the esophagus and the left atrial posterior wall is variable, and the esophagus is most susceptible to injury where it is closest to areas of endocardial ablation. Esophageal ulcer seems to precede AEF development, and postablation endoscopy documenting esophageal ulcer may identify patients at higher risk for AEF...
September 26, 2017: Circulation
https://www.readbyqxmd.com/read/28942174/gut-biofilm-forming-bacteria-in-inflammatory-bowel-disease
#19
REVIEW
Ankita Srivastava, Jaya Gupta, Sunil Kumar, Awanish Kumar
Inflammatory bowel disease (IBD) symbolizes a group of intestinal disorders in which prolonged inflammation occur in the digestive tract (esophagus, large intestine, small intestine mouth, stomach). Both genetic and environmental factors (infections, stress, diet) are involved in the development of IBD. As we know that bacteria are found in the intestinal mucosa of human and clinical observations revealed bacterial biofilms associated with patients of IBD. Various factors and microbes are found to play an essential role in biofilm formation and mucosal colonization during IBD...
September 20, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28930282/esophageal-cancer-genomic-and-molecular-characterization-stem-cell-compartment-and-clonal-evolution
#20
REVIEW
Ugo Testa, Germana Castelli, Elvira Pelosi
Esophageal cancer (EC) is the eighth most common cancer and is the sixth leading cause of death worldwide. The incidence of histologic subtypes of EC, esophageal adenocarcinoma (EAC) and esophageal squamous carcinoma (ESCC), display considerable geographic variation. EAC arises from metaplastic Barrett's esophagus (BE) in the context of chronic inflammation secondary to exposure to acid and bile. The main risk factors for developing ESCC are cigarette smoking and alcohol consumption. The main somatic genetic abnormalities showed a different genetic landscape in EAC compared to ESCC...
September 14, 2017: Medicines (Basel, Switzerland)
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