Publications by authors named "Michel Kahaleh"

Resected rectal polyps with deep invasion into the submucosa (pT1b-sm2,3) or the muscle layer (pT2) are currently confronted with surgery due to non-curative resection. We evaluated the efficacy, safety, and locoregional control of adjuvant radiotherapy (RT) and/or chemotherapy (CT) following endoscopic KAR (knife-assisted resection) in patients with invasive early rectal cancers who are unwilling or unsuitable for additional surgical resection. Fifty-one patients with early rectal cancers, pT1b or pT2, underwent post-resection adjuvant RT and/or CT in 15 centers worldwide.

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Primary sclerosing cholangitis (PSC) is an idiopathic cholestatic liver disease that may lead to biliary strictures and destruction. It is associated with p-ANCA positivity and inflammatory bowel disease, typically ulcerative colitis. The aim of this study is to investigate the trends of inpatient healthcare utilization and mortality from 2008 to 2017 in the United States.

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Article Synopsis
  • The study focuses on developing guidelines for the safe use of fluoroscopy in gastrointestinal endoscopy, balancing its benefits with concerns about radiation exposure to patients and healthcare workers.
  • A modified Delphi method was used, involving three rounds of surveys with 46 experts, resulting in 43 proposed statements, of which 31 achieved consensus and were prioritized across various categories such as Patient Safety and Staff Safety.
  • The final consensus statements highlight the importance of education and safety measures, with a significant majority rated as high priority, aiming to enhance safety culture in healthcare settings while utilizing fluoroscopy.
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Article Synopsis
  • The text refers to a correction made to a previously published article.
  • The specific article mentioned can be identified by its DOI, which is 10.1055/a-2411-1814.
  • Corrections like this are common in academic publishing to address errors or inaccuracies in research.
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Article Synopsis
  • - The study investigated outcomes of lumen-apposing metal stents (LAMS) placement in patients with surgically altered anatomy (SAA), which is not well-documented in existing literature, involving 270 patients across 25 tertiary care centers up to November 2023.
  • - Technical success of the procedures was very high at 98%, with clinical success at 97%, although there was a notable adverse event rate of 12%, with various degrees of severity recorded.
  • - The results suggest that while LAMS placement in SAA is effective, due to the risk of complications, these procedures should only be performed by experienced endoscopists in specialized centers.
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Background & Aims: There is significant variability in the immediate post-operative and long-term management of patients undergoing per-oral endoscopic myotomy (POEM), largely stemming from the lack of high-quality evidence. We aimed to establish a consensus on several important questions on the after care of post-POEM patients through a modified Delphi process.

Methods: A steering committee developed an initial questionnaire consisting of 5 domains (33 statements): post-POEM admission/discharge, indication for immediate post-POEM esophagram, peri-procedural medications and diet resumption, clinic follow-up recommendations, and post-POEM reflux surveillance and management.

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Background And Objectives: Management of hepatic abscesses has traditionally been performed by image-guided percutaneous techniques. More recently, EUS drainage has been shown to be efficacious and safe. The aim of this study is to compare EUS-guided percutaneous catheter drainage (PCD) of hepatic abscesses.

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Background/aims: Nonagenarians will purportedly account for 10% of the United States population by 2050. However, no studies have assessed the outcomes of nonvariceal upper gastrointestinal bleeding (NVUGIB) in this age group.

Methods: The National Inpatient Sample database between 2016 and 2020 was used to compare the clinical outcomes of NVUGIB in nonagenarians and octogenarians and evaluate predictors of mortality and the use of esophagogastroduodenoscopy (EGD).

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The increasing prevalence of bariatric surgery, particularly Roux-en-Y gastric bypass, has necessitated innovative approaches for endoscopic retrograde cholangiopancreatography (ERCP) due to the altered anatomy. Laparoscopy-assisted ERCP offers high success rates but leads to extended hospital stays and an increased risk of adverse events. Enteroscopy-assisted ERCP encounters technical challenges, resulting in lower success rates.

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Background: Viral infections are known to impact the pancreato-biliary system; however, there are limited data showing that the same is true of COVID-19. Endoscopic retrograde cholangiopancreatography (ERCP) can safely be performed in patients with COVID-19 infection, but outcomes of patients with COVID-19 infections and concomitant pancreatic and biliary disease requiring endoscopic intervention are unknown.

Aims: This study aims to evaluate the severity of pancreaticobiliary diseases and post-ERCP outcomes in COVID-19 patients.

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Digital single-operator cholangioscopy (DSOC) allows the diagnosis of biliary duct disorders and treatment for complicated stones. However, these technologies have limitations such as the size of the probe and working channel, excessive cost, and low image resolution. Recently, a novel DSOC system (eyeMAX, Micro-Tech, Nanjing, China) was developed to address these limitations.

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Malignant biliary obstruction is typically referred to endoscopists for palliation. A curative resection is indeed rarely an option in this condition. Photodynamic therapy and radiofrequency ablation are 2 modalities that can be offered in those patients.

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Background: Nonvariceal upper gastrointestinal bleeding (NVUGIB) is a medical emergency that has significant morbidity and mortality. The available data about the impact of COVID-19 infection on mortality in patients with NVUGIB is limited.

Methods: We identified all hospitalizations with a principal diagnosis of NVUGIB in 2020.

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The European Society of Gastrointestinal Endoscopy (ESGE) has recognized the need to formalize and enhance training in diagnostic endoscopic ultrasound (EUS). This manuscript represents the outcome of a formal Delphi process resulting in an official Position Statement of the ESGE and provides a framework to develop and maintain skills in diagnostic EUS. This curriculum is set out in terms of the prerequisites prior to training; the recommended steps of training to a defined syllabus; the quality of training; and how competence should be defined and evidenced before independent practice.

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Background And Aims: Lumen-apposing metal stents (LAMSs) have revolutionized the treatment of various gastroenterologic conditions that previously required surgery. The use of LAMSs for the management of small-bowel obstruction (SBO) involves EUS-guided coloenterostomy (EUS-CE) between the colon and a dilated loop of the small intestine proximal to the point of obstruction. This procedure is potentially beneficial for patients with malignant SBO who are poor surgical candidates.

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Undifferentiated early gastric cancer (UD-EGC) represents an extended indication for endoscopic submucosal dissection (ESD) based on the existing guidelines. This study evaluated the prevalence of UD-EGC recurrence after ESD, and potentially implicated risk factors. Data from 17 centers were collected retrospectively including demographics, endoscopic and pathological findings, and follow-up data from UD-EGC cases treated by ESD.

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Background: Endoscopic ultrasound (EUS)-guided gastroenterostomy (EUS-GE) is a minimally invasive therapy for patients with gastric outlet obstruction without the risks of surgical bypass and the limited long-term efficacy of enteral self-expanding metal stent placement. However, due to its novelty, there is a lack of significant data comparing long-term outcomes of patients with EUS-GE, based on the underlying disease. In this study, we compare outcomes of EUS-GE on benign versus malignant indications.

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Endoscopic ultrasound-directed transgastric ERCP (EDGE) is a safe and efficacious procedure to treat pancreaticobiliary diseases in Roux-en-Y gastric bypass (RYGB). This multicenter study aimed to determine the long-term outcomes of EDGE focusing on fistula persistence rates and post-procedure weight change. Information about patients with Roux-en-Y gastric bypass anatomy who underwent EDGE between 2015 and 2021 from 10 institutions was captured in a registry.

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Peroral endoscopic myotomy (POEM) has become a recognized treatment for achalasia. The technique requires CO insufflation. It is estimated that the partial pressure of CO (PaCO ) is 2 to 5 mm Hg higher than the end tidal CO (etCO ), and etCO is used as a surrogate for PaCO because PaCO requires an arterial line.

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Introduction: Cholecystectomy (CCY) is the gold standard treatment of acute cholecystitis (AC). Nonsurgical management of AC includes percutaneous transhepatic gallbladder drainage (PT-GBD) and endoscopic ultrasound-guided gallbladder drainage (EUS-GBD). This study aims to compare outcomes of patients who undergo CCY after having received EUS-GBD vs PT-GBD.

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Background: Duodenoscope-related multidrug-resistant organism (MDRO) infections raise concerns. Disposable duodenoscopes have been recently introduced in the market and approved by regulatory agencies with the aim to reduce the risk of endoscopic retrograde cholangiopancreatography (ERCP) associated infections. The aim of this study was to evaluate the outcome of procedures performed with single-use duodenoscopes in patients with clinical indications to single-operator cholangiopancreatoscopy.

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Endoscopic retrograde cholangiopancreatography (ERCP) is the standard of care in the management of unresectable malignant biliary obstruction. However, endoscopic ultrasound (EUS)-guided biliary drainage has become widely accepted over the past several years for complicated biliary drainage in cases when ERCP is unsuccessful or not feasible. Recent emerging evidence suggests EUS-guided hepaticogastrostomy and EUS-guided choledochoduodenostomy are noninferior, and possibly even superior to conventional ERCP for primary palliation of malignant biliary obstruction.

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Synopsis of recent research by authors named "Michel Kahaleh"

  • - Michel Kahaleh's recent research primarily focuses on advanced endoscopic techniques and their outcomes in patients with altered anatomical conditions or specific gastrointestinal diseases, such as those following bariatric surgery and individuals requiring per-oral endoscopic myotomy (POEM).
  • - His studies include a multicenter analysis of lumen apposing metal stent placements in surgically altered anatomy, exploring their safety and efficacy, and he contributed to establishing guidelines on post-procedural care in POEM patients using a Delphi consensus method.
  • - Kahaleh also investigates the implications of COVID-19 on pancreato-biliary diseases and examines clinical outcomes in elderly populations suffering from nonvariceal upper gastrointestinal bleeding, underscoring the need for specialized care in these high-risk groups.