Outcomes of duodenal stenting: Experience in a French tertiary center with 220 cases

International audienceIntroduction: Endoscopic stenting for malignant gastroduodenal outlet obstruction (MGOO) is described as ineffective and not long-lasting despite a few favorable studies. This study aimed to evaluate the clinical outcomes of a large series of patients in a tertiary center. Methods: A single-center retrospective study was performed using data collected from all patients who received palliative duodenal self-expandable metal stents between January 2011 and December 2016. The primary endpoints were patient diet after the first duodenal procedure (Gastric Outlet Obstruction Scoring System, GOOSS) and clinical success. The secondary endpoints were the median patency duration (calculated according to the Kaplan-Meier method) and the cumulative incidence of reintervention. Results: Two-hundred twenty patients were included. The increase in the GOOSS score was significant (p < 0.001), and the clinical success rate was 86.3%. The median estimated patency duration was 9.0 months [6.5-29.1]. Patients with pancreatic adenocarcinoma had significantly longer patency durations (p = 0.02). The estimated cumulative probability of a second duodenal procedure after 4 months was 13%. Conclusions: In this large series of patients who underwent duodenal stenting for MGOO, we observed significant changes in GOOSS scores, a relatively long patency duration compared to findings in previous series, and a low probability of subsequent duodenal procedures, primarily due to a low median overall survival time (4 months)

Piecemeal Resection for Large Colorectal Adenomas Remains Essential in 2022: A Single-Center Experience in a Tertiary French Center

International audienceBackground and aims: Colorectal lesions measuring greater than 20 mm are unsuitable for en bloc endoscopic mucosal resection (EMR): piecemeal EMR (PM-EMR) and endoscopic submucosal dissection (ESD) are needed. The European Society of Gastrointestinal Endoscopy (ESGE) recommends ESD only for microinfiltrative lesions, although Japanese teams perform en bloc ESD for all lesions. We report the outcomes obtained in our endoscopy unit for these lesions and assess the hybrid "knife-assisted piecemeal EMR" (KAPM-EMR) technique. The main aim was to assess the short-term outcomes (C1). The secondary objectives were to evaluate the long-term results (C2), adverse event rate and management of recurrence.Methods: We retrospectively analyzed data from patients treated by PM-EMR, KAPM-EMR and ESD for a colorectal lesion measuring greater than 20 millimeters using prospective inclusion over four years.Results: Data from 167 patients (median age: 70) with a median follow-up of 15.1 months were analyzed after excluding 95 patients. A total of 131 lesions were removed by PM-EMR, 24 by KAPM-EMR and 12 by ESD; 146/167 (87.4%) patients were considered in remission at C1. Recurrence was treated by endoscopy in 20/21 patients (95%); 86/89 (96.6%) were in remission at C2. A total of 16/167 patients developed adverse events, all of whom except one were endoscopically managed. KAPM-EMR was associated with a higher perforation risk (p=0.037). No differences in postoperative bleeding were found among the three groups (p=0.576).Conclusions: Piecemeal resection remains an effective and safe technique for large colorectal adenomas. KAPM-EMR may be useful but should be applied with caution due to the risk of perforation

The PRSS3P2 and TRY7 deletion copy number variant modifies risk for chronic pancreatitis

Background PRSS1 and PRSS2 constitute the only functional copies of a tandemly-arranged five-trypsinogen-gene cluster (i.e., PRSS1, PRSS3P1, PRSS3P2, TRY7 and PRSS2) on chromosome 7q35. Variants in PRSS1 and PRSS2, including missense and copy number variants (CNVs), have been reported to predispose to or protect against chronic pancreatitis (CP). We wondered whether a common trypsinogen pseudogene deletion CNV (that removes two of the three trypsinogen pseudogenes, PRSS3P2 and TRY7) might be associated with CP causation/predisposition. Methods We analyzed the common PRSS3P2 and TRY7 deletion CNV in a total of 1536 CP patients and 3506 controls from France, Germany, India and Japan by means of quantitative fluorescent multiplex polymerase chain reaction. Results We demonstrated that the deletion CNV variant was associated with a protective effect against CP in the French, German and Japanese cohorts whilst a trend toward the same association was noted in the Indian cohort. Meta-analysis under a dominant model yielded a pooled odds ratio (OR) of 0.68 (95% confidence interval (CI) 0.52–0.89; p = 0.005) whereas an allele-based meta-analysis yielded a pooled OR of 0.84 (95% CI 0.77–0.92; p = 0.0001). This protective effect is explicable by reference to the recent finding that the still functional PRSS3P2/TRY7 pseudogene enhancers upregulate pancreatic PRSS2 expression. Conclusions The common PRSS3P2 and TRY7 deletion CNV was associated with a reduced risk for CP. This finding provides additional support for the emerging view that dysregulated PRSS2 expression represents a discrete mechanism underlying CP predisposition or protection

The PRSS3P2 and TRY7 deletion copy number variant modifies risk for chronic pancreatitis

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