Successful Endoscopic Treatment Research Articles

Treatment of a staple-line leak after laparoscopic sleeve gastrectomy using an esophagoduodenal Niti-S Mega-stent.

A 56-year-old female with class 3 obesity, was previously submitted to laparoscopic sleeve gastrectomy (LSG) two weeks before current admission. The patient was admitted due to fever, abdominal pain and vomiting. CT revealed a 13.5cm collection between the gastric wall and left hepatic lobe. Piperacillin-Tazobactam was initiated, and percutaneous drainage of the purulent collection was performed. The upper endoscopy showed pus in the gastric lumen and a 10-mm leak at the esophago-gastric junction with contrast extravasation. Argon plasma coagulation (40W, 2L/min) was applied at the orifice margins to promote healing. After 0,038'' guidewire placement through the proximal jejunum, a Niti-S™-MEGA™ (Mega-Stent) 28x230mm (Taewoong Medical™) was deployed under fluoroscopic control. CT at 72h showed absence of leakage. Oral nutrition was started uneventfully. Ambulatory endoscopy was scheduled for eight weeks later to remove the stent, which was easily accomplished with a foreign body forceps. Granulation tissue was observed in the previous leak location and no extraluminal contrast was observed at fluoroscopic evaluation, confirming complete healing and successful endoscopic treatment. Three weeks after stent removal, the patient presented with dysphagia. Upper endoscopy revealed a short and narrowed lumen stenosis at 28cm from the incisives, which was easily manage through TTS balloon dilation. No additional complications were observed.

Endoscopic treatment of intermediate bronchus rupture in a 4-year-old child with polytrauma

In the structure of children's injuries, thoracic trauma occurs in less than 10% of cases, but it is the second most likely cause of death of a child. The culprit of the fatal outcome may be a rupture of the bronchus, which disrupts adequate ventilation of the lungs. The purpose of our publication is to demonstrate a rare clinical case of successful endoscopic treatment of intermediate bronchus rupture in a 4-year-old child with polytrauma. Description of the observation. A 4-year-old boy was injured in an accident as a pedestrian. For the first 3 days, he was treated for polytrauma (ISS=41) in the hospital at the place of residence, where, according to emergency indications, drainage of the right pleural cavity with two drains for tension pneumothorax and laparotomy for intra-abdominal bleeding due to liver rupture were performed. The relative stabilization of the child's condition by the 3rd day of the post-traumatic period made it possible to transport him to our clinic (level 1 trauma center). Against the background of the therapy, stable stabilization of hemodynamics was achieved, but air blowing through the drains was preserved, complete expansion of the right lung parenchyma could not be achieved, and the gas composition of the blood remained subcompensated. On the 5th day of the posttraumatic period, LTBS was performed, which made it possible to diagnose a rupture of the intermediate bronchus measuring 3x9 mm and perform its occlusion with a positive effect. After 7 days, LTBS was performed with the removal of blockers. After the removal of the blockers, complete expansion of the right lung was noted, recurrence of the bronchopulmonary fistula was not noted. The duration of mechanical ventilation and hospitalization of the child was due to TBI. In the follow-up after 1 year, clinical laboratory, X-ray and endoscopic examination did not reveal respiratory pathology. Conclusion. The cause that disrupts adequate ventilation of the lungs and aggravates the course of the post-traumatic period in polytrauma may be bronchus rupture. In the presented case, intraluminal endoscopy made it possible to timely detect a rupture of a large bronchus and perform minimally invasive surgical treatment, which ensured further positive dynamics in the child's condition and a favorable outcome of polytrauma as a whole.

OGC SO19 - Management and outcomes for Barrett’s oesophagus with dysplasia in a tertiary centre

Abstract Background Barrett’s oesophagus is a premalignant condition. Development of high-grade dysplasia (HGD) formerly was an indication for oesophagectomy, but endoscopic treatment (ET) is now recommended as first-line therapy: radiofrequency ablation (RFA) or endoscopic mucosal resection (EMR). Oesophagectomy is only considered for cases where ET was unsuccessful. Previous review of our institution’s outcomes between 2014 and 2017 showed a 54% complete EMR excision rate and 20% salvage oesophagectomy (n=25). Since then, RFA has been utilised in our institution. We aimed to review our recent data to assess current outcomes. Method Retrospective analysis was performed of patients identified via registration at the Hull University Hospital Trust oesophagogastric MDT between March 2017 and December 2023. Inclusion criteria was confirmed histology of HGD on 2 occasions by 2 specialist pathologists, 6 weeks apart. EMR was performed for focal oesophageal lesions and non-nodular segments were treated by RFA. Patients were included once they had at least one surveillance endoscopy and 6 months had passed following treatment. Patients who were either unfit for ET and managed medically (n=6), and those who were subsequently proven to have more advanced disease and treated surgically (n=4) were excluded. Results 35 patients were identified: 20 underwent EMR, 15 RFA. 55% of EMR patients had successful excision, 9 required additional RFA for residual low-grade dysplasia (LGD). 66% RFA patients had successful ablation. 3 patients required further EMR for residual LGD. Overall 82% had successful ET with no HGD on surveillance. 5 patients had persistent HGD and 1 T1b disease: 4 underwent oesophagectomy, 2 managed oncologically. Barrett’s tended towards being longer in patients where ET failed to eradicate HGD (median 6cm vs 3cm MWU p=0.07). No patient in the series died because of disease-related pathology. 1 patient developed stricture post-RFA requiring dilatation. Conclusion ET for HGD is effective with a high rate of successful treatment. It can be used as a single or dual modality. Salvage oesophagectomy rates are lower than previously reported (8% vs 20%) and complications are low (3% stricture rate). Longer segment Barrett’s may be less likely be responsive to ET, although not reaching significance in our series. ET should continue to be offered as the first-line treatment for oesophageal HGD.

639. WHICH FACTORS LEAD PATIENTS WITH BENIGN ESOPHAGEAL STRICTURES FOR SURGICAL TREATMENT BESIDES ENDOSCOPIC TREATMENT?

Abstract Background This work proposes to evaluate patients with benign esophageal strictures, excluding caustic strictures, about their etiologies and poor prognostic factors for the success of endoscopic treatment. Methods It was evaluated in our service 38 patients, from 1992 to 2023, with benign esophageal strictures not related to caustic strictures. We could follow-up 24 patients from 7 months and 384 months (average of 136 months). Four died during the follow- up. We could analyze these following outcomes: clinical symptoms, surgical indications, age, gender, alcohol abuse, smoking, length of stricture, number of endoscopic dilation and stricture etiology. Results Concerning the 24 patients with follow-up, 4 had esophagectomy; 10 underwent endoscopic treatment with fundoplication and 10 were treated with endoscopic and medical treatment. Both groups, endoscopic and medical treatment, and endoscopic treatment with fundoplication had 4 patients that continued symptomatic (40%). The number of endoscopic dilations range from 1 to 101 (average 18) in each patient. The etiology of 38 patients with benign esophageal strictures were: 35 gastroesophageal reflux disease (13 Barrett´s esophagus); one with infectious esophagitis; one eosinophilic esophagitis and another due to esophageal varicose sclerosis. The prognostic factors to surgical treatment will be analyzed by statistical analysis. Conclusion From our data, it is possible to conclude that the endoscopic treatment is effective to manage the majority of benign esophageal strictures, even in association with fundoplication. Moreover, the main etiology was gastroesophageal reflux disease. Only few patients have developed indication to esophagectomy.

Endoscopic approach for biliopancreatic disease after pancreaticoduodenectomy: a 10-year single-center experience.

In surgically altered anatomy (SAA), endoscopic retrograde cholangiopancreatography (ERCP) can be challenging, and it remains debatable the choice of the optimal endoscopic approach within this context. We aim to show our experience and evaluate the technical and clinical success of endoscopic treatment performed in the setting of adverse events (AE) after pancreaticoduodenectomy (PD). This study was conducted on a retrospective cohort of patients presenting biliopancreatic complications after PD from 01/01/2012 to 31/12/2022. All patients underwent ERCP at our Endoscopy Unit. Clinical, instrumental data, and characteristics of endoscopic treatments were collected. 133 patients were included (80M, mean age = 65 y.o.) with a total of 296 endoscopic procedures (median = 2 procedures/treatment). The indications for ERCP were mainly biliary AE (76 cases, 57.1%). Technical success was obtained in 121 patients of 133 (90.9%). 112 out of 133 (84.2%) obtained clinical success. Nine patients out of 112 (8%) experienced AEs. Clinical success rates were statistically different between patients with biliary or pancreatic disease (93.4% vs 73.6%, p < 0.0001). Septic patients were 38 (28.6%) and showed a worse prognosis than non-septic ones (clinical success: 65.7% vs 91.5%, p = 0.0001). During follow-up, 9 patients (8%), experienced recurrence of the index biliopancreatic disease with a median onset at 20months (IQR 6-40.1). Our case series demonstrated that the use of a pediatric colonoscope in ERCP procedures for patients with AEs after PD is both safe and effective in treating the condition, even in a long-term follow-up.

Predictive role of ureteral wall thickness and patient characteristics in endoscopic treatment outcomes for ureteral stricture disease following stone surgery

PurposeTo evaluate the role of certain radiological parameters and patient characteristics in predicting the success of endoscopic treatment in ureteral stricture disease.MethodsFifty one adult patients with ureteral stricture disease (< 1 cm) after developing due to upper ureteral stones with ureteroscopic laser disintegration were included and in addition to stone and patient parameters, radiological parameters including ureteral wall thickness (UWT) at the impacted stone site were also measured on computed tomography (CT) images. Patients were divided into two groups: Group 1: Patients with endoscopic treatment success and Group 2: Patients with endoscopic treatment failure. The possible relationship between the UWT values and other radiological parameter was comparatively evaluated.ResultsMean UWT value assessed at the treated stone site was significantly higher in cases unresponsive to endoscopic treatment with values of 2.77 ± 1.03 mm and 4.25 ± 1.32 mm in Group 1 and 2 respectively. A cut off value 3.55 mm for UWT was found to be highly predictive for endoscopic treatment failure.ConclusionsOur current results indicated that assessment of UWT value at the obstructing stone could be helpful enough to predict the likelihood of failure following endoscopic management of strictures with high sensitivity and specificity. Evaluation of this particular parameter could let the endourologists to look for more rational treatment alternatives with necessary measures taken on time.

Natural History and Endoscopic Management of Pancreaticopleural Fistula: A Tertiary Care Center Experience

Abstract Background Pancreaticopleural fistula (PPF) is a rare complication associated with pancreatitis, caused by disruption of the pancreatic duct, either directly or through rupture of a peripancreatic fluid collection, resulting in leakage of pancreatic juice into the pleural space. It commonly presents as massive, relapsing pleural effusions, often on the left side with high amylase content. Nonspecific chest symptoms often predominate, making it a diagnostic challenge. There is a lack of clarity regarding the management of this rare entity. Objectives This study aimed to review the typical presentations, pathophysiology, and current role of endoscopic therapy in patients with PPF. Materials and Methods A retrospective analysis of the results of endoscopic treatment of patients with symptomatic PPF due to pancreatitis was done. Results Ten patients with pancreatitis (6 males; mean age 33.6 ± 15.4 years: 6 chronic, 4 acute) with symptomatic PPF were analyzed. Endoscopic retrograde cholangiopancreatography was performed in all, with pancreatic sphincterotomy and stenting of the main pancreatic duct (passive transpapillary drainage). Technical and clinical success was achieved in 7/10(70%) and 10/10(100%) patients, respectively. Though the leak was bridged in three patients, pancreatic sphincterotomy and downstream stenting (when bridging was not possible) were successful in closing PPF. One (10%) patient needed surgery for gastric outlet obstruction. The mean duration of endotherapy was 12.1 ± 9.4 months and the time taken for leak closure was 15.3 ± 10.4 weeks. Long-term success of endoscopic treatment (median follow-up period of 48.9 ± 28.7 months) was achieved in all patients. Conclusions Endoscopic treatment (passive trans-papillary drainage) is a safe and effective procedure for managing postinflammatory PPFs, and should be attempted in cases of failure of medical treatment.

Successful Endoscopic Treatment of Difficult Common Bile Duct Stones Using Various Interventional Techniques: A Case Report

Clearance of a difficult biliary stone can be obtained using various interventional techniques such as endoscopic sphincterotomy followed by endoscopic papillary large balloon dilation, mechanical lithotripsy, peroral cholangioscopy-assisted intraductal electrohydraulic/laser lithotripsy, temporary plastic stent insertion, percutaneous transhepatic cholangioscopy-guided lithotripsy, and extracorporeal shock wave lithotripsy. We hereby describe the successful endoscopic treatment using various currently available interventional techniques in a case with multiple difficult common bile duct stones. Furthermore, we discuss the countermeasures to overcome the hurdles of each procedure.

Management strategies and root causes of missed iatrogenic intraoperative ureteral injuries with delayed diagnosis: a retrospective cohort study of 40 cases

BackgroundIntraoperative iatrogenic ureteral injuries represent rare technical surgical complications with the potential for adverse patient outcomes, particularly when the diagnosis is delayed. Ideally, these technical complications are recognized and repaired intraoperatively. This study was designed to investigate the root causes and outcomes of missed intraoperative ureteral injuries at a tertiary urology referral centre in Tunisia.MethodsThis is a retrospective cohort study in a tertiary urology referral centre in Tunis from January 1st, 2015, to December 31st, 2020, including all patients with iatrogenic ureteral injury, not diagnosed intraoperatively. The factors associated with the success of endoscopic treatment and those associated with the unfavourable evolution were investigated.ResultsA total of 40 iatrogenic ureteral injuries were included. Gynaecological surgery was responsible for 85% of ureteral injuries, mainly during hysterectomies (55%). The symptoms were dominated by low back pain (37.5%) and pyelonephritis (25%). Endoscopic treatment was attempted in 22 cases, it was sufficient in 12 cases. Ureteral injury required surgical treatment in 24 cases, and ureteroneocystostomy was performed in 16 cases. Nephrectomy was performed in eight cases, representing 20% of injuries, including three cases as the first treatment for late-diagnosed cases with a destroyed kidney. In the analytical study, endoscopic treatment was sufficient in 50% in case of ureteral fistula versus 27% in case of ureteral stenosis (p = 0.04). Nephrectomy was performed in 10% of cases when ureteral injury was diagnosed within the first month postoperatively compared to 60% of cases when this delay exceeded one month (p = 0.004).ConclusionIatrogenic ureteral injuries discovered postoperatively are mostly secondary to gynaecologic surgery. Although endoscopic treatment is usually performed as a first treatment, a more aggressive surgical is often necessary, with a nephrectomy rate of 20%.

Successful endoscopic treatment of multiple large intrahepatic bile duct stones with benign choledochojejunal anastomotic stenosis.

Successful endoscopic treatment of multiple large intrahepatic bile duct stones with benign choledochojejunal anastomotic stenosis.

Long-term outcomes following successful endoscopic treatment of T1 esophageal adenocarcinoma: a multicenter cohort study

Endoscopic eradication therapy (EET) is guideline endorsed for management of early-stage (T1) esophageal adenocarcinoma (EAC). Patients with baseline high grade dysplasia (HGD) and EAC are at highest risk of recurrence following successful EET, but limited data exist on long-term (> 5 year) recurrence outcomes. We aimed to assess the incidence and predictors of long-term recurrence in a multicenter cohort of T1EAC patients treated with EET. Patients with T1 EAC achieving successful endoscopic cancer eradication with a minimum of 5-years clinical follow-up were included. The primary outcome was neoplastic recurrence, defined as dysplasia or EAC, and was characterized as early (<2 years), intermediate (2-5 years), or late (>5 years). Predictors of recurrence were assessed by time to event analysis. 84 T1 EAC patients (75 T1a, 9 T1b) with a median 9.1 years (range 5.1-18.3 years) of follow-up were included. The overall incidence of neoplastic recurrence was 2.0/100 patient years of follow up. 7 recurrences (3 dysplasia, 4 EAC) occurred after 5 years of EAC remission. 88% of recurrences were treated successfully endoscopically. EAC recurrence-related mortality occurred in 3 patients at a median of 5.2 years from EAC remission. Complete eradication of intestinal metaplasia (CE-IM) was independently associated with reduced recurrence (HR 0.13). Following successful EET of T1 EAC, neoplastic recurrence occurred after 5 years in 8.3% of cases. Careful long-term surveillance should be continued in this patient population. CE-IM should be the therapeutic endpoint for EET.

A case report of achalasia and large epiphrenic diverticulum treated by peroral endoscopic myotomy combined with diverticuloseptotomy

The combination of esophageal achalasia with epiphrenic diverticulum is extremely rare and mostly treated surgically. Several cases of successful endoscopic treatment were presented in the literature, but treatment strategy has not yet been defined. Aim. To present a case of the rare combination as achalasia and giant esophageal epiphrenic diverticulum successfully treated endoscopically. Case report. We present to your attention a case report of a 75-year-old woman with complete dysphagia, significant weight loss, who was diagnosed with symptomatic epiphrenic diverticulum secondary to achalasia. Upper gastrointestinal endoscopy showed signs of severe fibrosis in the submucosal layer of the diverticulum. She received peroral endoscopic myotomy combined with diverticuloseptotomy made from the same submucosal tunnel. The regression of symptoms from 10 to 2 points according to the Eckardt symptom score clinically showed the treatment success. Conclusions. The presented endoscopic one-tunnel technique could be an effective miniinvasive option for large symptomatic epiphrenic diverticula associated with achalasia.

Successful endoscopic treatment of giant multiple choledocholithiasis using oral transpapillary cholangioscopy and intraductal contact lithotripsy

The paper presents a clinical case of successful staged endoscopic treatment for giant multiple choledocholithiasis . Conventional surgery was contraindicated in the patient due to significant comorbidities and high anaesthetic risk . Contact lithotripsy was the basic minimally invasive treatment method . It was combined with balloon dilatation of the endoscopic papillosphincterotomy area and mechanical intraductal lithotripsy . Contact lithotripsy in oral transpapillary cholangioscopy , in combination with other modern methods for endoscopic treatment of choledocholithiasis , has a good technical and clinical effect even with giant calculi .

Endoscopic treatment of Mirizzi syndrome

Mirizzi syndrome is a complication of cholelithiasis occurring in 0.25-6% of cases [1]. Clinical pattern includes jaundice due to prolapse of a large calculus into the common bile duct following cholecystocholedochal fistula. Ultrasound, CT, MRI, MRCP data, as well as some pathognomonic signs provide preoperative diagnostics of Mirizzi syndrome. In most cases, treatment of this syndrome requires open surgery. We report successful endoscopic treatment of a patient with long-standing bile stone disease complicated by Mirizzi syndrome. Postoperative complications of surgery performed in acute period of disease and further staged treatment using retrograde access are illustrated. Endoscopic treatment demonstrated minimally invasive management of disease presenting diagnostic and technical difficulties.

Endoscopic treatment of pancreaticopleural fistulas.

IntroductionPancreaticopleural fistula (PPF) is a serious complication of acute and chronic pancreatitis.ObjectiveTo evaluate the effectiveness of various endoscopic techniques for the treatment of patients with PPFs.MethodologyProspective analysis of the results of endoscopic treatment of 22 patients with PPF due to pancreatitis was conducted at the Department of General, Gastroenterological, and Oncological Surgery, Ludwik Rydygier Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Torun, between 2018 and 2021.ResultsPPF was diagnosed in 22 patients (21 men and 1 woman; mean age 49.52 [30–67] years) with pancreatitis. In 19/22 (86.36%) patients, PPF communicated with the left pleural cavity and in 3/22 (13.64%) patients with the right pleural cavity. Chronic pancreatitis was diagnosed in 14/22 (63.64%) patients. Symptomatic pancreatic fluid collections were found in 15/22 (68.18%) patients with PPF (pancreatic pseudocyst in 11 and walled-off pancreatic necrosis in four patients). Endoscopic retrograde cholangiopancreatography was performed in 21/22 (95.45%) patients, confirming the diagnosis of PPF. All 21 patients underwent endoscopic sphincterotomy with prosthesis implantation in the main pancreatic duct (passive transpapillary drainage). In 1/22 (4.55%) patients, active transmural/transgastric drainage of the PPF was necessary due to inflammatory infiltration of the peripapillary region, precluding endoscopic pancreatography. Endoscopic transmural drainage was performed in all the 15 patients with pancreatic fluid collection. Clinical success was achieved in 21/22 (95.45%) patients. The mean total time of endotherapy was 191 (range 88–712) days. Long-term success of endoscopic treatment of PPFs during one year follow-up period was achieved in 19/22 (86.36%) patients.ConclusionsEndoscopic treatment is effective for managing post-inflammatory PPFs. The preferred treatment method is passive transpapillary drainage (prosthesis of the main pancreatic duct). If transpapillary drainage is not feasible, transmural drainage of the PPF remains the preferred method. Endoscopic transmural drainage leads to closure of the fistula canal in patients with pancreatic fluid collection complicated by PPF.

S2699 Endoscopic Management of Obstructing Pouch Twist

Introduction: The twisted pouch is a rare complication of IPAA with few cases being reported in the literature. Most patients have been managed surgically with adhesiolysis and de-rotation with or without redo of the ileorectal anastomosis. Endoscopic management of a twisted pouch has not been previously reported and this report describes the first successful endoscopic treatment of the twisted pouch with septectomy. Case Description/Methods: A 35-year-old female underwent 3-stage restorative proctocolectomy with IPAA for medically refractory ulcerative colitis in 2017. She presented a year later with nausea, vomiting, diarrhoea and significant weight loss. CT revealed a dilated small bowel with obstruction at the anal anastomosis. At our institution she underwent a pouchoscopy which revealed a dilated pouch lumen, a twist in the distal pouch with a nearly completely blocked pouch outlet. The twist was treated with outpatient endoscopic needle-knife septectomy with electroincision of the twisted fold, followed by the placement of two endoclip spacers. The procedure was performed with the patient under conscious sedation, observed for 30 mins and discharged afterwards. This led to immediate resolution of her symptoms. 2-week repeat pouchoscopy revealed a mild outlet stricture, requiring further endoscopic septectomy. 6-month repeat pouchoscopy showed complete resolution of the obstruction. Yearly routine pouchoscopy showed that pouch twist remained to be revolved, but a severe circumferential anastomotic stricture. The latter was treated with endoscopic circumferential stricturotomy with the needle knife. Her last follow-up was in 2021 with the pouch twist remaining resolved on pouchoscopy. (Figure) Discussion: Pouch twist results from poor orientation of the mesentery at surgery or due to adhesions. Severe twisted pouch can lead to acute or chronic pouch obstruction. Acute pouch twist requires timely management to avoid bowel necrosis and obstipation. Twisted pouch commonly presents two to five years after surgery with pouchitis, ulceration, chronic abdominal pain, and incontinence. Diagnosis of this condition typically requires a high degree of suspicion, CT, and gastrografin enema. The patients traditionally are managed surgically with adhesiolysis and derotation and fixing the pouch with or without redo of the ileorectal anastomosis.This case report describes the successful endoscopic treatment of the twisted pouch with septectomy. We believe that endoscopic septectomy can be offered as a first-line therapy.Figure 1.: Left: Initial obstructed twisted pouch Right: Post-endoscopic septectomy.

Peptic ulcer disease and H. pylori gastritis: key advances in clinical management

Helicobacter pylori (H. pylori) gastritis and non-steroidal anti-inflammatory drug (NSAID) intake are the most important risk factors for peptic ulcer disease (PUD) and ulcer bleeding. H. pylori infection was shown to increase the risk of ulcer bleeding in patients with PUD who are taking NSAID, aspirin, or another antiplatelet drug. H. pylori-positive patients on combined platelet aggregation inhibition are at the highest risk of bleeding. Evidence-based interdisciplinary treatment recommendations for the safe use of NSAID have been released. For patients with a moderate risk of PUD, the combination of NSAID and a proton pump inhibitor (PPI) or a monotherapy with a selective cyclooxygenase-2 (COX-2) inhibitor is recommended, whereas patients with a high risk of bleeding should receive a combination of a selective COX-2 inhibitor and a PPI. According to a recent randomized trial, hemodynamically stable patients with signs of upper gastrointestinal bleeding and an increased risk of death (Glasgow-Blatchford Score ≥ 12) undergoing endoscopy 6-24 after consultation do not have any disadvantage in terms of 30-day mortality compared to patients receiving endoscopy within 6 hours. After successful endoscopic hemostasis, additional prophylactic angiographic embolization does not reduce the risk of recurrent bleeding. Successful H. pylori eradication reduces the risk of developing gastric cancer (GC) in first-degree relatives of patients with GC by 73 %. In patients with successful endoscopic treatment of early GC, H. pylori testing with subsequent eradication also halves the rate of metachronous GC. Clarithromycin-based triple therapy for H. pylori eradication shows a decreasing effectiveness due to increasing antibiotic resistance, especially against macrolides. Accordingly, bismuth-containing quadruple therapy is widely recommended as the standard empiric first-line therapy.

TU1.12 Video Presentation: The OVESCO Clip for Endoscopic Treatment of Gastrocutanoeus Fistula

Abstract Background Percutaneous endoscopic gastrostomy (PEG) is an important route of nutrition in many patients. PEG removal usually leads to spontaneous closure in a few days. Gastrocutaneous fistula (GCF) after PEG removal is an uncommon complication occurring in 2% of patients. Despite its rarity, it is responsible for significant morbidity and reduced quality of life. Treatment is initially focused on medical management and endoscopic clipping, with advanced endoscopic techniques and surgery reserved for selected cases. Method We present a video presentation demonstrating successful endoscopic treatment of GCF using the OVESCO Over the Scope clip with resolution of symptoms and closure of the fistula tract. The device is a novel innovation designed to achieve tissue apposition and compression without ischaemia. It is licensed for Gastrointestinal iatrogenic defects, endoscopic perforation, bleeding and GCF. The 72 year old patient had debilitating symptoms of gastric leakage for over a year despite previous attempts at endoscopic clipping, fibrin glue and curettage of the fistula tract. Results As shown in the video, the clip achieved good opposition with no post procedural leak. The patient was reviewed at 3 and 12 months with no recurrence of their symptoms. The external cutaneous opening had closed at 3 months. The patient reported an increase in weight, improved mood and a greater quality of life following the intervention. Conclusion The OVESCO clip has been proven to facilitate successful endoscopic closure of GCF in selected patients in whom initial treatment measures have failed. This mitigates the need and risks of surgical closure.

Analysis of the Characteristics of Colonoscopy Perforation and Risk Factors for Failure of Endoscopic Treatment.

Background: Many studies have been done regarding perforation after colonoscopy, but few studies analyzed the risk factors of endoscopic treatment failure after colonoscopy perforation. This study aimed to analyze the clinical characteristics and treatment plan of those patients with perforation after colonoscopy diagnosis and the treatment and risk factors of failure to endoscopic treatment.Method: This was a retrospective observational study of patients who underwent colonoscopy examination and treatment at the Affiliated Hospital of Yangzhou University, from 04/2009 to 03/2020. The patients were grouped as perforation, treatment success, or failure (required laparoscopy or laparotomy).Results: From April 2009 to March 2020, 43,470 patients were examined and treated with colonoscopy. There were 35 cases of intestinal perforation, for an incidence of 0.081%. Four patients had immediate surgical intervention (two patients with laparoscopic surgery and two with laparotomy surgery). Thirty-one (88.57%) patients underwent endoscopic treatment. Endoscopic treatment was successful in 20 patients and failed in 11. Compared with the failure group, the perforation size in the success group was smaller (7.60±4.85 vs. 14.4±7.03 mm, P=0.004), hospital stay was shorter (26.6±13.1 vs. 14.2±3.0, P=0.011), and hospitalization costs were lower (30,208±9506 vs. 23,053±6227 RMB, P=0.002). Multivariable logistic stepwise analysis showed that the absence of abdominal pain after therapeutic colonoscopy was independently associated with the success of endoscopic treatment.Conclusions: Endoscopic treatment is logically the preferred modality for perforation management, leading to good recovery, shorter hospital stay, and lower costs of treatment. Postoperative abdominal pain is significantly related to the failure of endoscopic treatment.

Dysplastic Recurrence After Successful Treatment for Early Barrett’s Neoplasia: Development and Validation of a Prediction Model

The combination of endoscopic resection and radiofrequency ablation is the treatment of choice for eradication of Barrett's esophagus (BE) with dysplasia and/or early cancer. Currently, there are no evidence-based recommendations on how to survey patients after successful treatment, and most patients undergo frequent follow-up endoscopies. We aimed to develop and externally validate a prediction model for visible dysplastic recurrence, which can be used to personalize surveillance after treatment. We collected data from the Dutch Barrett Expert Center Registry, a nationwide registry that captures outcomes from all patients with BE undergoing endoscopic treatment in the Netherlands in a centralized care setting. We used predictors related to demographics, severity of reflux, histologic status at baseline, and treatment characteristics. We built a Fine and Gray survival model with least absolute shrinkage and selection operator penalization to predict the incidence of visible dysplastic recurrence after initial successful treatment. The model was validated externally in patients with BE treated in Switzerland and Belgium. A total of 1154 patients with complete BE eradication were included for model building. During a mean endoscopic follow-up of 4 years, 38 patients developed recurrent disease (1.0%/person-year). The following characteristics were independently associated with recurrence (strongest to weakest predictor): a new visible lesion during treatment phase, higher number of endoscopic resection treatments, male sex, increasing BE length, high-grade dysplasia or cancer at baseline, and younger age.External validation showed a C-statistic of 0.91 (95%confidenceinterval, 0.86-0.94) with good calibration. This is the first externally validated model to predict visible dysplastic recurrence after successful endoscopic eradication treatment of BE with dysplasia or early cancer. On external validation, our model has good discrimination and calibration. This model can help clinicians and patients to determine a personalized follow-up strategy.