Publications by authors named "Olivier Raphael"

Article Synopsis
  • Achalasia is effectively treated with peroral endoscopic myotomy (POEM), but factors that contribute to early failure in treatment need further investigation, particularly in European populations.
  • A retrospective study of 746 patients revealed an early failure rate of 9.4%, with significant predictors including age ≤45 years, achalasia types I and III, and severe adverse events during the procedure.
  • The study highlighted that a high Eckardt score before the procedure is also a key factor, emphasizing the need to monitor retrosternal pain levels post-operation for better outcomes.
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Article Synopsis
  • Patients with inflammatory bowel disease (IBD) treated with infliximab or vedolizumab showed a COVID-19 prevalence similar to the general French population before vaccinations, with only 4.5% confirmed cases.
  • Factors increasing COVID-19 risk included using public transport and living in urban settings, while treatment type or disease activity did not affect infection rates.
  • Recommendations suggest that maintaining sanitary barrier measures is essential for IBD patients on biological therapies to minimize the risk of SARS-CoV-2 infection.
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Background: Whether Peroral Endoscopic Myotomy (POEM) can be proposed as a second-line treatment in patients with achalasia remains to be confirmed in real-life series.

Objective: This study aimed to compare the efficacy, feasibility and safety of POEM between treatment-naïve patients and patients who had prior endoscopic or surgical therapies for achalasia.

Methods: All consecutive patients who underwent a POEM procedure for achalasia in our centre from June 2015 to September 2018 were included in this retrospective study.

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The recent development of per oral endoscopic myotomy (POEM) has been a game changer in the management of patients with achalasia. However, approximately 1 in 10 patients will not experience clinical success. The aim of this mini-review is to describe the current state of knowledge about the risk factors associated with POEM failure for the treatment of achalasia.

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Background And Aims: No recommendation regarding antibiotic prophylaxis and preparation modalities are available for patients with esophageal motor disorders who benefit from Per-Oral Endoscopic Myotomy (POEM). The aim of our study was to evaluate their impact on the POEM's safety.

Patients And Methods: This study was a comparative and multicentric retrospective analysis of a database prospectively collected.

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Background And Aims: Endoscopic management is preferred to surgical management for large superficial colorectal lesions. However, the optimal endoscopic resection strategy (piecemeal endoscopic mucosal resection [pEMR] or endoscopic submucosal dissection [ESD]) is still debated from an economical point of view. To date, in France, there is no Health Insurance reimbursement rate for the hospital stays related to ESD.

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Our objectives were to better characterize the colorectal function of patients with Spina Bifida (SB). Patients with SB and healthy volunteers (HVs) completed prospectively a standardized questionnaire, clinical evaluation, rectal barostat, colonoscopy with biopsies and faecal collection. The data from 36 adults with SB (age: 38.

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Background: Data on outcomes of microsatellite instable and/or mismatch repair deficient (dMMR/MSI) digestive non-colorectal tumors are limited.

Aims: To evaluate overall survival (OS) of patients with dMMR/MSI digestive non-colorectal tumor.

Methods: All consecutive patients with a dMMR/MSI digestive non-colorectal tumor were included in this French retrospective multicenter study.

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Background: Analysis of serum biomarkers for the assessment of atrophic gastritis (AG), a gastric precancerous lesion, is of growing interest for identification of patients at increased risk of gastric cancer. The aim was to analyze the diagnostic performance of serum pepsinogen testing using another method, chemiluminescent enzyme immunoassay (CLEIA), as well as of other new potential biomarkers.

Material And Methods: The sera of patients considered at increased risk of gastric cancer and undergoing upper endoscopy collected in our previous prospective, multicenter study were tested for pepsinogen I (PGI) and II (PGII), interleukin-6 (IL-6), human epididymal protein 4 (HE-4), adiponectin, ferritin and Krebs von den Lungen (KL-6) using the CLEIA.

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Lynch syndrome patients could benefit from various recommendations to prevent digestive cancers. In this review, we summarize the criteria to identify Lynch syndrome in patients with digestive cancers. We detail endoscopic screening procedures in patients with Lynch syndrome for gastric, small bowel, pancreatic, and colorectal cancers.

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Background: Analysis of serum biomarkers for the assessment of atrophic gastritis (AG), considered as gastric precancerous lesion, is of growing interest and recommended by current guidelines. Our aim was to evaluate the diagnostic performance of a panel of biomarkers (GastroPanel®) for the detection of AG in France, a country of a low gastric cancer (GC) incidence.

Material And Methods: In this prospective, multicenter, cross-sectional study, consecutive patients considered at increased risk of GC and undergoing upper endoscopy with gastric biopsies were included.

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Article Synopsis
  • Full-field optical coherence tomography (FFOCT) is a new imaging technique that evaluates biological tissue by analyzing how light reflects off it.
  • The study tested FFOCT on fresh digestive mucosal biopsies, allowing for quick imaging with two modes: static (high-resolution images of gut structures) and dynamic (detailed views of individual cells).
  • The findings suggest that FFOCT is a promising, dye-free tool for analyzing changes in gut tissue directly on-site.
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  • - The text discusses the connection between non-Helicobacter pylori heterotrophic (NHPH) bacteria and gastrointestinal issues like gastritis, ulcers, and cancer, emphasizing that diagnosis relies on microscopic and molecular analysis due to the difficulty in culturing these bacteria.
  • - It notes that there is limited information on antibiotic resistance for NHPH, leading to common treatment with antibiotics such as clarithromycin.
  • - The first documented case of a human infection with a NHPH strain showing mutation linked to clarithromycin resistance is described, where treatment with metronidazole successfully eradicated the infection, suggesting that genetic testing for resistance can enhance treatment strategies for NHPH infections.
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Aims: Spina Bifida (SB) is a rare congenital condition that frequently impairs the neurological control of both fecal continence and defecation. Several therapeutic strategies have been proposed but impact assessment is lacking. Our objectives were to quantify the symptomatic improvement and to determine the optimal strategy in this rare condition where randomized controlled trials are difficult to conduct.

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