Publications by authors named "Jean-Christophe Valats"

Background: Bowel preparation represents a significant issue to high-quality colonoscopy. Oral mannitol requires a single dose, is of low volume, and has a pleasant taste and rapid action.

Aims: This SATISFACTION study compared single-dose (same day) oral mannitol 100 g/750 mL with standard split-dose PEG-ASC2 L (MoviPrep®).

View Article and Find Full Text PDF
Article Synopsis
  • A multicenter study assessed the feasibility and safety of EUS-guided fiducial marker placement in patients with esophageal or rectal cancer referred for radiation therapy, focusing on success rates and outcomes.
  • The study involved 33 patients, achieving a 93.9% success rate in marker placement, with an average procedure time of 12.5 minutes and no reported adverse events.
  • Results showed that all fiducial markers remained visible throughout radiation therapy, emphasizing the approach's safety and effectiveness for these cancer types.
View Article and Find Full Text PDF
Article Synopsis
  • Weight regain after Roux-en-Y gastric bypass (RYGB) is often due to issues like the stretching of the gastro-jejunal connection. The transoral outlet reduction (TORe) procedure is a less invasive option to address this.
  • A study involving 73 patients evaluated the effectiveness of the TORe procedure combined with standard nutrition/behavioral management versus standard management alone. Results showed participants who underwent TORe had significantly higher excess weight loss at 12 months (13.5% vs. -0.77%).
  • While TORe showed promising weight loss results, it also had a notable rate of adverse events (20%), including severe complications like perforations, indicating it carries risks even though it's minimally invasive.
View Article and Find Full Text PDF

Background And Study Aim: Zenker's diverticulum is a rare disease that affects quality of life due to dysphagia and regurgitation. This condition can be treated by various surgical or endoscopic methods.

Patients And Method: Patients treated for Zenker's diverticulum in three centers in the south of France between 2014 and 2019 were included.

View Article and Find Full Text PDF

Background: Treatment of common bile duct stones (CBDS) includes laparoscopic cholecystectomy (LC) with either laparoscopic common bile duct exploration (LCBDE) or perioperative endoscopic retrograde cholangiopancreatography (ERCP). The main objective of this study was to identify predictive factors for the failure of upfront and exclusive surgical treatment by LCBDE.

Methods: This is a single-center, retrospective study on patients with CBDS and operated for LC between 2007 and 2019.

View Article and Find Full Text PDF

BACKGROUND : The diagnosis of cholangiocarcinoma in patients with a biliary stricture without mass syndrome can be obtained by biliary brushing with a sensitivity of ~50 %. We performed a multicenter randomized crossover trial comparing the aggressive Infinity brush with the standard RX Cytology Brush. The aims were to compare sensitivity for cholangiocarcinoma diagnosis and cellularity obtained.

View Article and Find Full Text PDF
Article Synopsis
  • This study evaluated mannitol as a bowel preparation laxative for colonoscopy and tested three different doses (50g, 100g, and 150g) to find the most effective one for future use.
  • Results showed that the 100g dose was the most effective, with 94.4% of patients achieving adequate bowel preparation, along with good adherence and safety.
  • The findings suggest that while mannitol's effectiveness and safety depend on dosage, gas concentrations were minimal across all doses, identifying mannitol 100g as the ideal candidate for further studies.
View Article and Find Full Text PDF

Background And Objectives: For the treatment of pancreatic duct stenosis due to chronic pancreatitis (CP) or postoperative (PO) stenosis, endoscopic procedures are usually the first choice. In cases of failure of the recommended treatment by ERCP, anastomosis between the Wirsung duct and the stomach or duodenum can be performed under EUS guidance. The objective of this retrospective study was to compare the outcomes of pancreatico-gastric or pancreaticoduodenal anastomosis under EUS for PO stenosis versus CP stenosis.

View Article and Find Full Text PDF

Background: Biomarkers are urgently needed for pancreatic ductal adenocarcinoma (PDAC). Endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA) is the cornerstone for diagnosing PDAC. We developed a method for discovery of PDAC biomarkers using the discarded EUS-FNA liquid.

View Article and Find Full Text PDF

Introduction: The aims of this retrospective multicenter study were to assess the technical success and adverse events of endoscopic retrograde cholangiopancreatography (ERCP) procedures in children in French and Belgian centers.

Methods: All children aged 1 day to 17 years who underwent ERCP between January 2008 and March 2019 in 15 tertiary care hospitals were retrospectively included.

Results: 271 children underwent 470 ERCP procedures.

View Article and Find Full Text PDF

Background And Aims: EUS-guided biliary drainage is indicated in cases of impossibility or failure of classic biliary drainage by ERCP. Recently we reported good efficiency of EUS-guided choledochoduodenostomy (EUS-CDS) using the electrocautery-enhanced lumen-apposing metal stent (ECE-LAMS) in a retrospective multicenter study. Use of the recommended technique (direct puncture with the ECE-LAMS with use of a pure cut current and a 6-mm stent) was the only predictive factor of clinical success.

View Article and Find Full Text PDF

Objectives: The results of only a few endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA) for pancreatic solid pseudopapillary neoplasm (SPN) have been published, and the safety of the procedure has never been investigated. Our study compared the recurrence rate in patients with and without preoperative EUS-FNA.

Methods: This European multicenter registry-based study was conducted in 22 digestive units, and retrospectively included all patients who underwent complete resection of a pancreatic SPN from 2000 to 2018.

View Article and Find Full Text PDF

Background: Endoscopic ultrasound-guided biliary drainage is an alternative to percutaneous biliary drainage in cases of malignant biliary obstruction and failure of classic endoscopic drainage by endoscopic retrograde cholangiopancreatography (ERCP). Recently, a new electrocautery-enhanced lumen-apposing metal stent (ECE-LAMS) that allows for endoscopic anastomosis (apposition stent) has become available for use in EUS-choledochoduodenostomy (EUS-CDS) and facilitates the procedure.

Methods: This was a retrospective study of all EUS-CDS procedures performed in France between April 2016 and August 2017.

View Article and Find Full Text PDF

Ulcerative proctitis is defined as a mucosal inflammation limited to the rectum. Ulcerative proctitis is responsible for distressing symptoms and alteration of patient quality of life. Effective treatment is important to prevent or delay proximal extension of the disease and to improve quality of life.

View Article and Find Full Text PDF

Ulcerative colitis (UC) is a chronic inflammatory bowel disease of unknown etiology. The treatment of UC is challenging, especially when it is associated with primary sclerosing cholangitis (PSC), a chronic inflammatory disease of the bile ducts that affects around 5% of patients with UC, and leads to an increased risk of cholangiocarcinoma and colorectal cancer. Microbiota is considered to play an important role in the pathogenesis of UC, although the efficacy of antibiotics in this context is only limited and transient.

View Article and Find Full Text PDF

Purpose Of Review: To review recent findings regarding eosinophilic enteritis, including epidemiology, pathogenesis, natural history, and treatment.

Recent Findings: A 2017 population-based study using a US healthcare system database identified 1820 patients with a diagnosis of eosinophilic enteritis among 35,826,830 individuals. The majority of patients with eosinophilic enteritis in this study were women (57.

View Article and Find Full Text PDF

Cytotoxic T-lymphocyte-associated antigen 4 (CTLA-4) modifying agents have been involved in the development of intestinal inflammation, especially therapeutic monoclonal antibodies directed against CTLA-4. Here we report the appearance of a severe stricturing Crohn's disease-like colitis in a patient with a kidney allograft who was treated with belatacept, a recombinant CTLA-4-Ig fusion protein.

View Article and Find Full Text PDF

Background And Study Aims: Fistula is the main complication of laparoscopic sleeve gastrectomy (LSG), for which healing is difficult to achieve. The aims of the study were to evaluate the efficacy of interventional endoscopy for post-LSG fistula treatment, to evaluate various endoscopic techniques used and identify their complications, and to identify predictive factors of healing following endoscopic treatment.

Patients And Methods: This retrospective multicenter study included patients with post-LSG fistula.

View Article and Find Full Text PDF

Introduction: Results of trials and meta-analyses comparing pegylated interferon (PEG-IFN)-α2a and PEG-IFN-α2b for the treatment of chronic hepatitis C are conflicting.

Objective: Our objective was to determine which PEG-IFN (α2a or α2b), in association with ribavirin, is the most effective for the treatment of chronic hepatitis C by performing an updated meta-analysis.

Method: MEDLINE (1950-2012) and EMBASE (1974-2012) databases, as well as the Cochrane Central Register of controlled trials and the Cochrane Database of Systematic Reviews, were searched.

View Article and Find Full Text PDF

Aim: To perform an updated meta-analysis comparing β-blockers (BB) with endoscopic variceal banding ligation (EVBL) in the primary prophylaxis of esophageal variceal bleeding.

Material And Methods: Randomized controlled trials were identified through electronic databases, article reference lists and conference proceedings. Analysis was performed using both fixed-effect and random-effect models.

View Article and Find Full Text PDF

Aim: To determine whether the association of β-blockers with endoscopic treatment is superior to endoscopic treatment alone for the secondary prophylaxis of oesophageal variceal bleeding.

Methods: Randomised controlled trials comparing sclerotherapy (SCL) with SCL plus β-blockers (BB) or banding ligation (BL) with BL plus BB were identified. Main outcomes were overall and 6, 12 and 24 mo rebleeding rates, as well as overall and 6, 12 and 24 mo mortality.

View Article and Find Full Text PDF