5 results on '"Serge Mayrand"'
Search Results
2. Predictors of dysplastic and neoplastic progression of Barrett’s esophagus
- Author
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Saleh Alnasser, Lorenzo E. Ferri, Raman Agnihotram, Myriam Martel, Eduardo L. Franco, and Serge Mayrand
- Subjects
Male ,medicine.medical_specialty ,Esophageal Mucosa ,Esophageal Neoplasms ,Adenocarcinoma ,Gastroenterology ,03 medical and health sciences ,Barrett Esophagus ,0302 clinical medicine ,Internal medicine ,medicine ,Humans ,Esophagus ,Prospective cohort study ,Retrospective Studies ,medicine.diagnostic_test ,business.industry ,Research ,Incidence ,Age Factors ,Quebec ,Retrospective cohort study ,Odds ratio ,Middle Aged ,medicine.disease ,Prognosis ,digestive system diseases ,Endoscopy ,medicine.anatomical_structure ,Dysplasia ,030220 oncology & carcinogenesis ,Barrett's esophagus ,Disease Progression ,030211 gastroenterology & hepatology ,Surgery ,Female ,Esophagoscopy ,business ,Follow-Up Studies - Abstract
It is unknown why some cases of Barrett’s esophagus progress to invasive malignant disease rapidly while others do so more slowly or not at all. The aim of this study was to identify demographic and endoscopic factors that predict dysplastic and neoplastic progression in patients with Barrett’s esophagus.Patients with Barrett’s esophagus who were assessed in 2000–2010 were assessed for inclusion in this retrospective study. Demographic and endoscopic variables were collected from an endoscopy database and the medical chart. Dysplastic and neoplastic progression was examined by time-to-event analysis. We used Cox proportional hazard regression modelling and generalized estimating equation methods to identify variables that were most predictive of neoplastic progression.A total of 518 patients had Barrett’s esophagus confirmed by endoscopy and pathology and at least 2 surveillance visits. Longer Barrett’s esophagus segment (≥ 3 cm) (odds ratio [OR] 1.2, 95% confidence interval [CI] 1.1–1.3) and increased age (≥ 60 yr) (OR 3.5, 95% CI 1.7–7.4) were independent predictors of progression from nondysplasia to dysplastic or neoplastic grades. Presence of mucosal irregularities (OR 8.6, 95% CI 2.4–30.4) and increased age (OR 5.1, 95% CI 1.6–16.6) were independent predictors of progression from nondysplasia to high-grade dysplasia or adenocarcinoma.Increased age, longer Barrett’s segment and presence of mucosal irregularities were associated with increased risk of dysplastic and neoplastic progression. In addition to dysplasia, these factors may help stratify patients according to risk of neoplastic progression and be used to individualize surveillance. More prospective studies with larger samples are required to validate these results.On ignore pour quelle raison certains cas d’oesophage de Barrett évoluent rapidement vers une maladie maligne envahissante, tandis que d’autres progressent lentement ou se stabilisent. Le but de cette étude était d’identifier les facteurs démographiques et endoscopiques prédicteurs d’une progression dysplasique et néoplasique chez les patients porteurs d’un oesophage de Barrett.Des patients présentant un oesophage de Barrett ayant été examinés entre 2000 et 2010, ont été évalués en vue de leur participation à cette étude rétrospective. Les variables démographiques et endoscopiques ont été recueillies à partir d’une base de données endoscopiques et des dossiers médicaux. La progression dysplasique et néoplasique a été évaluée par analyse du délai de survenue de l’événement. Nous avons utilisé le modèle de la régression de Cox (risques proportionnels) et les équations d’estimation généralisée afin d’identifier les variables les plus prédictives d’une progression néoplasique.En tout, 518 patients présentaient un oesophage de Barrett confirmé par examen endoscopique et anatomopathologique et comptaient au moins 2 visites de surveillance. La présence de segments d’oesophage de Barrett plus longs (≥ 3 cm) (rapport des cotes [RC] 1,2, intervalle de confiance à 95 % [IC] 1,1–1,3) et un âge avancé (≥ 60 ans) (RC 3,5, IC à 95 % 1,7–7,4) ont été des prédicteurs indépendants de progression d’un grade non dysplasique vers un grade dysplasique. La présence d’irrégularités muqueuses (RC 8,6, IC à 95 % 2,4–30,4) et l’âge avancé (RC 5,1, IC à 95 % 1,6–16,6) ont été des prédicteurs indépendants de progression de la non-dysplasie vers une dysplasie de haut grade ou l’adénocarcinome.L’âge avancé, des segments d’oesophage de Barrett plus longs et la présence d’irrégularités muqueuses ont été associés à un risque accru de progression dysplasique et néoplasique. En plus de la dysplasie, ces facteurs peuvent faciliter la stratification des patients selon le risque de progression néoplasique et servir à individualiser la surveillance. Il faudra procéder à d’autres études prospectives auprès d’échantillons de population plus volumineux pour valider ces résultats.
- Published
- 2019
3. Severe Cytomegalovirus Infection Masquerading as Recurrent Ischemic Colitis in a Patient with End-Stage Renal Disease
- Author
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Ruiyao Huang, Amine Benmassaoud, and Serge Mayrand
- Subjects
0301 basic medicine ,medicine.medical_specialty ,business.industry ,030106 microbiology ,MEDLINE ,Endoscopy ,General Medicine ,medicine.disease ,Gastroenterology ,Ischemic colitis ,End stage renal disease ,Cytomegalovirus infection ,03 medical and health sciences ,Text mining ,Internal medicine ,Image ,Medicine ,business - Published
- 2017
4. 211 - Multimodal Management of Early Neoplasia in Barrett's Esophagus: Is there Still a Role for Esophagectomy in the Era of Endoscopic Treatment?
- Author
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Lorenzo E. Ferri, Serge Mayrand, Carmen L. Mueller, Jonathan Spicer, and Philippe Bouchard
- Subjects
medicine.medical_specialty ,Hepatology ,business.industry ,General surgery ,medicine.medical_treatment ,Gastroenterology ,030209 endocrinology & metabolism ,medicine.disease ,03 medical and health sciences ,0302 clinical medicine ,Esophagectomy ,Barrett's esophagus ,medicine ,030212 general & internal medicine ,business ,Endoscopic treatment - Published
- 2018
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5. Randomized controlled trial comparing outcomes of video capsule endoscopy with push enteroscopy in obscure gastrointestinal bleeding
- Author
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Pascal Burtin, Myriam Martel, Ernest G. Seidman, Gilles Jobin, Alan N. Barkun, Josee Parent, Carlo A Fallone, Stephen C Hanley, Dev S Segarajasingam, Serge Mayrand, and Kevin A. Waschke
- Subjects
Enteroscopy ,Male ,medicine.medical_specialty ,Capsule Endoscopy ,law.invention ,Video capsule endoscopy ,03 medical and health sciences ,0302 clinical medicine ,Randomized controlled trial ,Capsule endoscopy ,law ,Double-balloon enteroscopy ,Intestine, Small ,Push enteroscopy ,medicine ,Humans ,lcsh:RC799-869 ,Aged ,Aged, 80 and over ,Double-Balloon Enteroscopy ,Hepatology ,medicine.diagnostic_test ,business.industry ,General surgery ,Gastroenterology ,General Medicine ,Middle Aged ,Optimal management ,3. Good health ,Surgery ,030220 oncology & carcinogenesis ,lcsh:Diseases of the digestive system. Gastroenterology ,030211 gastroenterology & hepatology ,Female ,Original Article ,business ,Gastrointestinal Hemorrhage ,Obscure gastrointestinal bleeding - Abstract
BACKGROUND: Optimal management of obscure gastrointestinal bleeding (OGIB) remains unclear.OBJECTIVE: To evaluate diagnostic yields and downstream clinical outcomes comparing video capsule endoscopy (VCE) with push enteroscopy (PE).METHODS: Patients with OGIB and negative esophagogastroduodenoscopies and colonoscopies were randomly assigned to VCE or PE and followed for 12 months. End points included diagnostic yield, acute or chronic bleeding, health resource utilization and crossovers.RESULTS: Data from 79 patients were analyzed (VCE n=40; PE n=39; 82.3% overt OGIB). VCE had greater diagnostic yield (72.5% versus 48.7%; PCONCLUSIONS: A VCE-first approach had a significant diagnostic advantage over PE-first in patients with OGIB, especially with regard to detecting small bowel lesions, affecting clinical certainty and subsequent further small bowel investigations, with no subsequent differences in bleeding or resource utilization outcomes in follow-up. These findings question the clinical relevance of many of the discovered endoscopic lesions or the ability to treat most of these effectively over time. Improved prognostication of both patient characteristics and endoscopic lesion appearance with regard to bleeding behaviour, coupled with the impact of therapeutic deep enteroscopy, is now required using adapted, high-quality study methodologies.
- Published
- 2015
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