A Rare Case of Gastric Fundal Vascular Ectasia: A Unique Presentation and Diagnostic Challenge

A 75-year-old male patient was admitted with a two-week history of melena on a background of psoriatic arthritis and chronic iron-deficiency anaemia. Initial bloods confirmed acute-on-chronic anaemia with evidence of ongoing bleeding as the hemoglobin consistently dropped to 77g/L from 84g/L. After resuscitation which included giving a unit of blood transfusion, an urgent endoscopy revealed moderate gastric fundal vascular ectasia (GFVE) with active bleeding from three points and mild gastric antral vascular ectasia with no bleeding. Pulsed Argon-Plasma coagulation was successfully applied during endoscopy immediately, achieving haemostasis. Small Grade-2 oesophageal varices without bleeding were also noted. Subsequent imaging confirmed new liver cirrhosis with CHILD-PUGH scoring of 6 falling into category A, which was under investigation as outpatient. The patient's haemoglobin stabilized post-endotherapy with significant symptoms improvement and he was also given intravenous iron infusion. No further gastrointestinal bleeding event was noted until the writing of this article.

The role of four-dimensional flow MRI as an adjunct to endoscopy for predicting variceal bleeding in patients with cirrhosis

BackgroundNon-invasive approach other than conventional endoscopy could be effectively used for screening and monitoring esophageal variceal bleeding (EVB).PurposeTo retrospectively investigate the role of four-dimensional (4D) flow magnetic resonance imaging (MRI) as an add-on tool to endoscopy for predicting EVB in cirrhotic patients with esophageal varices (EVs).Material and MethodsA cohort of 109 cirrhotic patients with EVs was divided into four groups: A = negative red color [RC] sign, no EVB, n = 60; B = negative RC sign, EVB, n = 13; C = positive RC sign, no EVB, n = 10; and D = positive RC sign, EVB, n = 26. All patients underwent laboratory assessments and 4D flow MRI using a 3-T scanner to analyze hemodynamic parameters within the main portal vein (PV), splenic vein, and superior mesenteric vein. Comparative analysis of 4D flow parameters among the groups was performed using the Mann-Whitney U-test, and diagnostic accuracy was assessed through the area under the receiver operator characteristic curve (AUC).ResultsIn the main PV, all 4D flow parameters were significantly lower in patients with a positive RC sign compared to those with a negative RC sign (P < 0.05). Patients with EVB had lower parameters than those without EVB (P < 0.05). The AUC values predicting actual variceal bleeding was 0.762 for endoscopy alone and 0.770-0.787 for 4D flow MRI. Integrating the endoscopic classification with the 4D flow MRI significantly improved the AUC value to 0.871 (P < 0.05).ConclusionFour-dimensional flow MRI may be useful as an add-on tool to endoscopy for predicting actual bleeding in cirrhotic patients with EVs.

Lumen-apposing metal stents provide early and late clinical benefits for the management of benign gastrointestinal strictures: Is there a role for definitive therapy?

Objectives

This study aimed to characterize the clinical outcomes, safety, and efficacy of lumen-apposing metal stents (LAMS) in treating benign gastrointestinal strictures.

Methods

A single-center retrospective review of all patients who underwent LAMS placement for benign strictures from June 2017 to July 2023. Primary outcomes were technical success, early clinical success, late clinical success (LCS), and sustained post-LAMS clinical success (SPLCS). Secondary outcomes included stent dwell time, stenosis changes, adverse events, reintervention rates, and symptomatology evaluation.

Results

Thirty-five patients underwent placement of 42 LAMS (74% female, mean age: 54.2 ± 11.7 years). Anastomotic strictures accounted for 64% of cases (N = 27, 45% at the gastrojejunal anastomosis). The median STD was 91.0 days (interquartile range [IQR]: 55.0-132.0). Technical success was obtained in all cases. Early clinical successand LCS were achieved in 80% of cases overall. SPLCS was achieved in 45% (n = 15) of cases. The overall reintervention rate was 63%, with a median time to reintervention being 50.5 days (IQR: 24-105). adverse events occurred in 28% (n = 12) overall, with a 24% migration rate (n = 10). Follow-up was completed in 83% of cases with a median duration of 629 days (range: 192.0-1297.0). Overall symptom improvement occurred in 79% (n = 27) during indwelling LAMS versus 58% and 56% at 30- and 60-days post-removal, respectively.

Conclusions

LAMS for benign gastrointestinal strictures are associated with high technical and early clinical success/LCS rates, positive quality-of-life metrics, and a tolerable adverse event rate. Overall, recurrence of symptoms and high reintervention rates post-LAMS removal reinforce the difficulty in managing benign gastrointestinal strictures but also argue for LAMS as a definitive therapy in select cases.

Impact of HPV status on oropharyngeal cancer detection via gastrointestinal endoscopy: a retrospective study

BACKGROUND

Gastrointestinal endoscopy (GIE) performed by gastroenterologists is essential for the early detection of pharyngeal cancer. Human papillomavirus (HPV) is a significant cause of oropharyngeal squamous cell carcinoma (OPSCC). However, the prevalence of HPV-related OPSCC detected by GIE remains unclear.

AIM

This study aims to evaluate the differences in detection rates, patient characteristics, and treatment approaches between HPV-positive and HPV-negative OPSCCs, with a focus on the role of GIE in early diagnosis.

METHODS

We retrospectively analyzed 207 OPSCCs from 2018 to 2022, where HPV infection was diagnosed by p16 immunohistochemistry. We compared detection modalities and evaluated the proportion of lesions detected by GIE in both p16-positive and p16-negative cases.

RESULTS

Out of the 207 patients, 92 (44.4%) were p16-positive. p16-positive cases had significantly lower rates of alcohol use, smoking, and history of esophageal or head/neck squamous cell carcinoma (all p < 0.001). Only 4.3% of p16-positive cases were detected by GIE, compared to 44.3% of p16-negative cases (p < 0.001). In addition, p16-positive patients were often diagnosed at advanced stages and underwent transoral resection less frequently (2.2% vs. 31.3%, p < 0.001). In cT1 cases, GIE and laryngoscopy revealed that p16-positive lesions were typically protruding and white to normal-colored, while p16-negative lesions were predominantly flat and erythematous.

CONCLUSIONS

HPV-related OPSCC cases are rarely detected by GIE, and few cases are treated with minimally invasive transoral resection. These findings highlight the need for enhanced detection strategies for HPV-positive OPSCC.

Recognition of refractory benign esophageal strictures at index endoscopy: creation of a predictive model

BACKGROUND AND AIMS

Refractory benign esophageal strictures (RBESs) are defined by an inadequate response to dilation. Early recognition of RBESs allows for earlier initiation of aggressive therapy, potentially leading to less morbidity and cost. We sought to establish a predictive model for RBESs.

METHODS

Patients who underwent EGD with esophageal dilation at Mayo Clinic Rochester were identified. In addition, a cohort of patients from a clinical database of patients with RBESs managed with self-dilation was identified. Malignant strictures, Schatzki's rings, and previously treated strictures were excluded. RBES was defined by the inability to maintain a diameter ≥14 mm over 5 dilation sessions. Multivariable logistic regression models were built to predict RBESs.

RESULTS

Of 128 identified patients with an index EGD and esophageal dilation, 25 met the RBES criteria. An additional 63 RBES patients were identified from the self-dilation cohort for a total of 88 RBES and 103 non-RBES patients. Multivariable analysis yielded a strong predictive model, with a c-statistic of .85, identifying stricture length ≥2 cm, diameter ≤7 mm, and proximal or diffuse stricture location as associated with a higher risk for RBESs. Patients without any of these risk factors had a 2% risk of RBESs, whereas those with all 3 risk factors had a risk of 73% for RBESs.

CONCLUSIONS

Risk of RBESs can be predicted at the index EGD based on stricture features. A predictive model for RBESs was created based on readily available risk factors, which may guide an individualized therapeutic approach to patients with benign esophageal strictures, potentially reducing morbidity and cost.

Effect of Cholecystectomy on Bubble Formation and Endoscopic Visualization: A Retrospective Cohort Study

PURPOSE

This study aimed to evaluate the association between cholecystectomy and colonic bubble formation during colonoscopy, METHODS: A single-center retrospective cohort study was conducted at Staten Island University Hospital. Researchers reviewed 348 colonoscopy reports, comparing patients with (n = 56) and without (n = 292) a history of cholecystectomy. Colonic bubble formation was assessed using a 0-3 scale (0 = no bubbles, 3 = severe bubbles). Secondary endpoints included polyp and adenoma detection, withdrawal and procedure times, bowel preparation quality, and repeat procedures. Statistical analysis included t-tests, Mann-Whitney U tests, and χ2 tests.

RESULTS

Patients with prior cholecystectomy had significantly higher incidence of severe bubble formation (score 3; 28.6% vs. 12%, p = 0.001), longer withdrawal times (18 ± 8 vs. 15 ± 5 min, p = 0.024), and increased need for repeat colonoscopies (10.7% vs. 2.1%, p = 0.001). No significant differences were found in adenoma detection, polyp detection, or bowel preparation quality between the two groups.

CONCLUSION

Cholecystectomy is associated with increased colonic bubble formation during colonoscopy, leading to longer withdrawal times and higher rates of repeat procedures. While this study did not find a difference in adenoma detection rates, the impaired visualization caused by bubbles may necessitate tailored bowel preparation strategies for patients with a history of cholecystectomy to optimize colonoscopy effectiveness.

Aetiology and Feasibility of Endoscopic Interventions for Massive Upper Gastrointestinal Bleeding in Makurdi, North-Central Nigeria

Introduction

Massive upper gastrointestinal bleeding (UGIB) is a life-threatening emergency with high mortality. Emergency upper gastrointestinal (GI) endoscopy, endotherapy, interventional radiology, and surgery are necessary to control the bleeding source and restore normal physiology. However, these interventions are suboptimal in most centres in Nigeria, contributing to the dismal mortality observed in this condition.

Objectives & Methodology

We aimed to determine the aetiology, feasibility of endoscopic intervention, and outcome of management of massive UGIB in Madonna Hospital, Makurdi, over a 30-month-period by retrospectively reviewing the medical and procedural records of patients presenting with hypotension from an endoscopically diagnosed upper GI bleeding source.

Result

A total of 39 patients were identified, with a mean age of 49.3 ± 17.7 years. Among them, 27 were males (69.2%) and 12 were females (30.8%). Bleeding peptic ulcers were the cause of massive UGIB in 21 cases (53.8%), followed by variceal bleeding, observed in 10 (25.6%) cases. Most of these cases were amenable to endoscopic treatment using adrenaline injection, endoclips, endoscopic variceal band ligation, and diathermy fulguration. Thirty-three (84.6%) patients survived, while the in-hospital mortality following initial endoscopic intervention was 6 out of 39 patients (15.4%), which is comparable to figures from more advanced climes.

Conclusion & Recommendation

Endoscopic management of massive UGIB is feasible in a low-resource setting. However, timely access to emergency endoscopy is vital to reduce mortality. Strategies to reduce risk factors for peptic ulcers and oesophageal varices are necessary to reduce the incidence of massive UGIB in Makurdi, Nigeria.

Evaluation of the Susceptibility of Bangladeshi University Students to Gastroesophageal Reflux Disease (GERD) and Its Associated Factors: A Cross-Sectional Study

Background and Aims

Gastroesophageal reflux disease (GERD) is a highly prevalent clinical condition all over the world. The study was conducted to determine the GERD prevalence among Bangladeshi university students using the frequency scale for the symptoms of gastroesophageal reflux disease (FSSG) score and to find out what factors are linked to the disease.

Methods

The study was based on descriptive cross-sectional analysis. After a comprehensive literature review, a questionnaire was developed with some pre-structured options kept in the sociodemographic, dietary, and lifestyle sections along with the FSSG parameters. The tool was disseminated among students of different universities in Bangladesh. After receiving the responses, all the data was analyzed using SPSS software (version 26.0).

Results

After scrutiny, 402 responses of the study participants were subjected to statistical analysis, and among participants, 57.2% (N = 230) were female and 42.8% (N = 172) were male. The GERD prevalence was 45.5% (N = 183), which indicated the FSSG score was more than 8 among 45.5% of the individuals. Logistic regression analysis revealed that eating beyond fullness (OR = 2.859, CI = 1.811-4.515), consumption of painkillers (OR = 2.237, CI = 1.370-3.653), anxiety (OR = 2.349, CI = 1.529-3.611), being stressed (OR = 2.255, CI = 1.456-3.494), quick eating habit (OR = 1.845, CI = 1.240-2.745), poor sleep quality (OR = 1.760, CI = 1.183-2.620), fast food consumption (OR = 1.613, CI = 1.082-2.404), eating sour and spicy food regularly (OR = 1.610, CI = 1.073-2.415), female gender (OR = 1.595, CI = 1.068-2.381), less interval between dinner and sleep (OR = 1.561, CI = 1.020-2.389), being alone most of the time (OR = 1.514, CI = 1.016-2.257), were significantly associated with the occurrence of GERD symptoms.

Conclusion

GERD symptoms were seen among a large number of university students. Various sociodemographic, dietary, and lifestyle-related factors had an impact on the disease; these contributing factors should be positively modified to alleviate the burden of GERD symptoms.

Treatment of the Buried Bumper Syndrome​​​​​: A Retrospective Multicenter Study With Inclusion of 160 Cases

BACKGROUND AND GOALS

The therapy of buried bumper syndrome (BBS) is difficult. The aim of this retrospective multicenter study was to analyze the treatment methods with focus on effectiveness and safety of endoscopic techniques.

METHODS

The analysis of all therapies and a comparison of the papillotome technique (PT) and needle knife-based nonpapillotome technique (NPT) were performed. Primary endpoint was technical success in one session, secondary endpoints overall technical success, number and duration of treatment sessions, SAE, and mortality.

RESULTS

The primary treatment of 160 BBS cases, diagnosed between 2003 and 2021, was NPT in 60 (37.5%), PT in 43 (26.9%), push/pull technique (PPT) in 40 (25.0%), no removal in 9 (5.6%), laparotomy in 7 (4.4%) cases, and external incision in 1 (0.6%) case. For PT and NPT rates of technical success in one session were 95.5% and 45.0% ( P <0.01), rates of overall technical success 100% and 88.3% ( P =0.02), and mean number and duration of treatment sessions 1.05 (±0.21) versus 1.70 (±0.91) ( P <0.01) and 32.17 (±21.73) versus 98,00 (±62.28) minutes ( P <0.01), respectively. No significant differences between PT and NPT were found for SAE (15.9% vs. 25.0%) and mortality (2.3% vs. 1.7%). For PPT, laparotomy and external incision rates of technical success in one session and overall technical success were 100%, rates of SAE 2.5%, 50.0%, and 0% and mortality 0%, 10.0%, and 0%.

CONCLUSIONS

Endoscopic therapy of BBS is treatment of choice in most cases with removal of incomplete BB by PPT. In case of complete BB PT appears more effective than NPT.

Endoscopic Duodenal Stenting for Iatrogenic Stapfer Type I Duodenal Perforation: An Alternative to Surgical Repair

Endoscopic retrograde cholangiopancreatography (ERCP) is an essential therapeutic tool but carries risks of serious complications, including luminal perforation. Stapfer Type I perforations, involving lateral or medial duodenal wall tears, are traditionally managed surgically with high associated morbidity/mortality. Here, we report the first documented case to our knowledge of an iatrogenic post-dilation Stapfer Type I duodenal perforation successfully managed with placement of a fully covered self-expandable metallic stent (Fc-SEMS). An 87-year-old female with a history of chronic obstructive pulmonary disease, coronary artery disease, hypertension, and hypothyroidism presented with cholestatic transaminitis and suspected biliary obstruction. Endoscopic evaluation during ERCP revealed a pre-ampullary peptic duodenal stricture not traversable with the duodenoscope. Endoscopic dilation with a CRE balloon led to a duodenal perforation and a through-the-scope duodenal Fc-SEMS was deployed bridging the perforation. The patient demonstrated rapid clinical and radiologic improvement, with full recovery and successful stent removal in two months. This case highlights Fc-SEMS as a viable, less invasive alternative to surgery for high-risk patients who have sustained a duodenal perforation.

A case report on hip implant's long journey: An unusual cause of obscure gastrointestinal bleeding

INTRODUCTION

Though obscure gastrointestinal bleeding accounts for a small proportion of gastrointestinal bleeding, it poses a great diagnostic challenge at times where gold standard initial endoscopic investigations may fail to detect.

PRESENTATION OF CASE

We present a case report of 70-year male who presented with obscure gastrointestinal bleeding. On thorough investigation the source of bleeding was found to be an orthopedic hip implant which migrated intraabdominally. The case was successfully managed with laparotomy, removal of implant and partial small bowel resection with prior anastomosis of small bowel.

DISCUSSION

Diagnosis of Obscure gastrointestinal bleeding is often challenging and identification of source and site of bleeding at times is not possible. Foreign body, as a cause of obscure gastrointestinal bleeding, is uncommon. Ingested foreign bodies and vascular prosthetic grafts are the known foreign bodies causing gastrointestinal bleeding. However prosthetic implants causing gastrointestinal bleeding is a rare occurrence.

CONCLUSION

Intraabdominal migration of orthopedic implant causing gastrointestinal bleeding is a very rare condition and should be considered as a rare complication of implants in such patients.

A case report and comprehensive literature review on colorectal seed bezoars caused by Akebia trifoliata seeds

The occurrence of bezoars is a relatively rare medical condition. Seed bezoars are typically discovered in the rectum and can cause symptoms such as constipation and pain. While the ingestion of seeds can lead to rectal impaction, complete intestinal blockage is uncommon. Although bezoars with various seeds have been documented, those containing Akebia trifoliata seeds are rare. A case report describes a patient who developed lower gastrointestinal obstruction following consumption of Akebia trifoliata seeds. The patient was admitted to the hospital due to recurring abdominal pain and difficulty passing stool for 4 days. The Computed Tomography Scan revealed an intestinal obstruction in the lower gastrointestinal tract, which was later confirmed through colonoscopy and patient history as being caused by ingestion of Akebia trifoliata seeds. After receiving treatment, the intestinal tract recovered; however, multiple ulcers persisted.

Visibility of esophageal squamous cell carcinoma under iodine staining on texture and color enhancement imaging

OBJECTIVE

Iodine staining on white light imaging (WLI) is the gold standard for detecting and demarcating esophageal squamous cell carcinoma (ESCC). We examined the effects of texture and color enhancement imaging (TXI) on improving the endoscopic visibility of ESCC under iodine staining.

METHODS

Twenty ESCC lesions that underwent endoscopic submucosal dissection were retrospectively included. The color difference between ESCC and the surrounding mucosa (ΔEe) on WLI, TXI, and narrow-band imaging was assessed, and ΔEe under 1% iodine staining on WLI and TXI. Furthermore, the visibility grade determined by endoscopists was evaluated on each imaging.

RESULT

The median ΔEe was greater on TXI than on WLI (14.53 vs. 10.71, respectively; p < 0.005). Moreover, the median ΔEe on TXI under iodine staining was greater than the median ΔEe on TXI and narrow-band imaging (39.20 vs. 14.53 vs. 16.42, respectively; p < 0.005 for both). A positive correlation in ΔEe under iodine staining was found between TXI and WLI (correlation coefficient = 0.61, p < 0.01). Moreover, ΔEe under iodine staining on TXI in each lesion was greater than the corresponding ΔEe on WLI. The visibility grade assessed by endoscopists on TXI was also significantly greater than that on WLI under iodine staining (p < 0.01).

CONCLUSIONS

The visibility of ESCC after iodine staining was greater on TXI than on WLI.

The usefulness of percutaneous bile duct metal stent insertion for malignant biliary obstruction: a retrospective study

BACKGROUND

Percutaneous transhepatic bile duct stent insertion is a useful alternative to the endoscopic approach for malignant biliary strictures. This study retrospectively reviewed the cases of percutaneous metallic stent insertion at our institution to evaluate its safety and usefulness.

METHODS

The study included cases of percutaneous bile duct stent insertion performed between April 2016 and August 2024. All patients included those with malignant biliary obstruction and those in whom an endoscopic approach was first attempted but could not reach or cannulate the papilla of Vater. Two procedures were used: a two-stage procedure, in which a drain was inserted to create an external or internal fistula, followed by stent insertion, and a one-stage procedure, in which the stent was inserted at the same time as the approach to the bile duct. The causes of biliary strictures and complications were examined.

RESULTS

The study included 14 cases: seven patients had pancreatic head cancer, including biliary tract cancer (n = 4) and postoperative gastric cancer (n = 3); three patients who underwent a one-stage insertion. The number of inserted stents tended to increase in patients with postoperative cholangiocarcinoma recurrence. No complication occurred in any patient. One patient had severe cholangitis, eight had moderate cholangitis, and four had mild cholangitis; two patients who underwent one-stage procedures had moderate cholangitis and one had mild cholangitis. In cases of two-stage expandable metal stent (EMS) insertion, the average time from initial drainage to EMS insertion was 10.5 days (4-25).

CONCLUSIONS

The stent can be safely inserted in a one-stage procedure without compromising the patient's quality of life. Therefore, one-stage insertion of EMS for malignant biliary stricture may be performed aggressively unless the patient has severe cholangitis.

Molecular Classification and Characterization of Noninsulinoma: Ready for Prime Time in Clinical Practice?

Pancreatic neuroendocrine tumors are a heterogeneous group of rare clinical tumors, which can be classified into functional pancreatic neuroendocrine tumor (insulinoma is the most common) and noninsulinoma. Insulinoma and noninsulinoma have different mutation profiles. In noninsulinoma, ATRX/DAXX mutation is associated with alternative lengthening of telomeres-positive phenotype and positively correlated with poor prognosis. Copy number variation is also a prognostic marker for a high risk of recurrence. Scholars have used epigenetics as well as a multiomics approach (combining epigenetics, metabolomics, proteomics, etc) to molecularly type noninsulinoma, and there are huge differences in molecular expression and patient prognosis between different groups. In this manuscript, we summarize the published studies that utilized genome, epigenome, transcriptome, and proteome data to classify noninsulinoma.

Latest possible timing for endoscopic-assisted intervention in capsule endoscopy

Background

Delayed upper gastrointestinal transit during small bowel capsule endoscopy (SBCE) can lead to incomplete or failed examinations but can be treated by endoscopic-assisted intervention (EAI). The aim of this study was to investigate the latest possible timing of EAI.

Methods

Patients who underwent SBCE and received EAI between July 2007 and December 2020 were retrospectively reviewed. A novel T-value was developed that accounted for the varied battery life of different generations of PillCam when determining the latest possible timing of EAI, where T is calculated as EAI time/[minimum battery life of the PillCam minus small bowel transit time (6 h)] × 100%. Patients were divided into two groups based on the cut-off value of the receiver operating characteristic curve: early EAI (group A, T < 76.3%) and late EAI (group B, T ≥ 76.3%). The primary outcome was the completion rate (CR), and the secondary outcome was the detection rate. The latest possible timing of EAI (h) was calculated according to the T-value formula and further verified in our recent data set.

Results

This study included 108 patients. The CR was significantly higher in group A than in group B (79.2% vs 58.2%; P = 0.018). Late EAI was an independent predictor of incomplete SBCE (odds ratio = 2.900; 95% confidence interval, 1.193-7.053). The latest possible timing of EAI was 1.5 h and 4.6 h from the start of the examination for PillCam SB1 and PillCam SB2/3, respectively.

Conclusions

Early EAI was associated with higher CR. The latest possible timing of EAI was 1.5 h for PillCam SB1 and 4.6 h for PillCam SB2/3 from the start of the examination.

Enterocutaneous Fistula in a Patient with Crohn's Disease After Internalization of a Foreign Body into the Gastrointestinal Tract

Background/Objectives: Crohn's disease is a chronic inflammatory condition with periods of exacerbation and remission that can involve any part of the gastrointestinal tract. The basic intestinal manifestation is frequently accompanied by extraintestinal involvement and may lead to complications such as perforations, fistulas and abscesses. Despite Crohn's disease being the most common reason of intestinal perforation, the other causes should be considered as well. Internalization of a foreign body, although rare, may still occur, especially in the pediatric population. Methods: The following case report presents the medical history of an 11-year-old patient who developed an enterocutaneous fistula two years after the diagnosis of Crohn's disease. Data analysis was carried out on the basis of patient medical records. Results: The fistula formed in the course of biological treatment during a period free of other symptoms indicating disease exacerbation. The imaging tests revealed the presence of a foreign body in the gastrointestinal tract, which could have been a potential cause of the observed inflammation that resulted in the development of the fistula. Conclusions: The presented case report as well as the literature indicate a correlation between the formation of intestinal fistulas and an active disease process. However, in the absence of symptoms of Crohn's disease exacerbation, other causes should be considered.

Isolated colonic amyloidosis: a rare condition mimicking malignancy

We report the case of a 54-year-old male with localized colonic amyloidosis presenting as rectal bleeding. Initial colonoscopy revealed a neoplastic-appearing lesion in the descending colon, but histopathology identified amyloid deposits, confirmed by Congo Red staining. Further assessment ruled out systemic involvement and primary (AL) amyloidosis, establishing the diagnosis as isolated colonic amyloidosis. This case highlights the importance of biopsy and histopathological evaluation in patients with atypical findings, especially when confounding factors such as monoclonal gammopathy of undetermined significance (MGUS) are present. Comprehensive pathological and molecular assessment are important to differentiate between localized and systemic amyloidosis and guide appropriate management.

The effects of endoscopic vacuum therapy for non-operative treatment of anastomotic leakage on oncological outcomes in rectal cancer patients

PURPOSE

Rectal resection has remained the cornerstone in curative treatment of rectal cancer. This however, implies the risk of anastomotic leakage leading to morbidity, mortality and potentially disease progression. Endoscopic vacuum therapy (EVT) has emerged as a promising tool in leakage therapy in order to avoid reoperation and Hartman resection. However, its clinical efficacy and its potential effect on oncological outcomes still requires further research.

METHODS

In this retrospective single-centre cohort study, we analysed all consecutive patients undergoing rectal resection for rectal cancer during 2012-2021. The incidence and management of anastomotic leakage and its effects on long-term oncological outcomes were analysed.

RESULTS

A total of 334 patients underwent rectal resection of whom 47 patients (14.1%) developed postoperative anastomotic leakage. Non-operative leakage treatment (NOLT) was successful in in 76.9% of which EVT was the most efficient (90.0% success) while reoperation was successful in 52.4% (p = 0.073). The more frequent application of EVT increased the NOLT rate from 48.3 to 66.7% during the observation period (p = 0.176). Concerning long-term outcomes, no differences in disease-free survival (p = 0.657) nor patient survival (p = 0.295) could be determined.

CONCLUSION

EVT is an effective treatment option for anastomotic leakage after rectal resection. EVT enables NOLT in the majority of cases. However, there might be no impact on oncological outcomes.

Hepatic cirrhosis and decompensation: Key indicators for predicting mortality risk

Liver cirrhosis represents the final stage of liver diseases. The transition from the compensated to the decompensated form is a critical phase, as it is associated with a negative impact on patient prognosis. Therefore, having a tool to identify patients at higher risk of complications and mortality is an ideal goal. Currently, the validated scores for this purpose are the model for end-stage liver disease score and the Child-Pugh score. However, these scores have limitations, as they do not account for other factors associated with liver cirrhosis that are equally relevant from a prognostic perspective. Among these, alterations in body composition, particularly sarcopenia, increase the risk of mortality and should therefore be considered in the comprehensive assessment of patients with liver cirrhosis.

Endoscopic Techniques for Colorectal Neoplasia Surveillance in Inflammatory Bowel Disease: A Systematic Review and Network Meta-Analysis

BACKGROUND AND AIMS

Dye-based chromoendoscopy (DCE) has been the preferred method for colonoscopy surveillance in patients with inflammatory bowel disease (IBD). However, with advances in endoscopy, virtual chromoendoscopy (VCE) techniques have emerged. This network meta-analysis evaluates the effectiveness of different endoscopy techniques for IBD patient surveillance.

METHODS

Sixteen randomized controlled trials involving 2514 patients were included in the analysis, comparing endoscopy techniques in IBD patient surveillance: DCE, high-definition white light endoscopy (WLE), standard-definition WLE, i-scan, narrow band imaging (NBI), flexible spectral imaging color enhancement (FICE), and autofluorescence imaging (AFI). We assessed the per patient neoplasia detection rate, positive predictive value (PPV), and withdrawal time between different endoscopy techniques. Moreover, subgroup analysis was conducted to investigate the neoplasia detection rate according to endoscopy techniques using various biopsy protocols.

RESULTS

Comparing neoplasia detection rates revealed that only DCE (OR: 2.56 [1.17-5.59]) significantly increased the neoplasia detection rate compared with standard-definition WLE. The subsequent rankings were high-definition WLE, NBI, FICE, i-scan, and AFI. Moreover, the PPVs of DCE, VCE, and high-definition WLE showed no significant difference compared with that of standard-definition WLE. However, DCE required a significantly longer withdrawal time. Subgroup analysis showed that DCE with random biopsy or target biopsy and high-definition WLE with target biopsy had superior neoplasia detection rates than standard-definition WLE with random biopsy.

CONCLUSION

DCE significantly outperforms standard-definition WLE in neoplasia detection rates, with random biopsy providing additional benefits. Although DCE does not lower PPV, it requires more withdrawal time. If DCE-based surveillance is not feasible, high-definition WLE with targeted biopsy should be considered as other VCE techniques offer no significant advantages.

Patients with Upper Third of Esophageal Squamous Cell Carcinoma Have Better Tumor Regression After Neoadjuvant Immunochemotherapy

BACKGROUND

Several high-quality clinical trials have shown promising results compared with neoadjuvant chemotherapy (NCT) or chemoradiotherapy, further supporting the efficacy of neoadjuvant immunochemotherapy (NICT) for locally advanced esophageal cancer (AEC). This study evaluated the efficacy of NICT in different segments of esophageal squamous cell carcinoma (ESCC) and aimed to identify potential prognostic factors.

METHODS

A retrospective cohort study analyzed 248 patients. Before undergoing radical surgery, the patients received two to four cycles of NICT. The relationship between different segments of ESCC and both clinical and pathologic characteristics were evaluated.

RESULTS

The patients with tumors in the upper thoracic esophagus had a higher proportion of lower tumor regression grade (TRG) scores. A significantly higher proportion of patients with TRG 0-1 was observed in the upper and middle thoracic tumor groups than in the lower thoracic group (P = 0.001). In esophageal cancer, TRG 2-3 was significantly associated with lower thoracic tumor location (odds ratio [OR], 3.298; P = 0.003), clinical T3 stage (OR, 2.834; P < 0.001), and clinical N2 stage (OR, 2.557; P = 0.045).

CONCLUSIONS

The patients with upper-third ESCC appeared to derive greater clinical benefits from NICT than those with tumors located in the lower third of the esophagus in this post hoc analysis. This could potentially serve as a predictor of NICT efficacy.

Severity of obstructive sleep apnea diagnosed incidentally during gastrointestinal endoscopy under conscious sedation

BACKGROUND

It remains unclear whether patients diagnosed as having obstructive sleep apnea (OSA) incidentally while undergoing gastrointestinal endoscopy under conscious sedation (GE-CS) have predominantly mild disease.

MATERIALS AND METHODS

We evaluated differences in the disease characteristics, severity and treatments received between patients who were suspected as having OSA during GE-CS (GE group, n = 56) and patients who visited our hospital with a history of OSA-related symptoms (SY group, n = 123).

RESULTS

The median age of patients, percentage of men and percentage of patients with obesity were 54 years, 68%, and 21% in the GE group and 51 years, 78%, and 31% in the SY group, respectively. The percentages of patients with mild, moderate, and severe OSA were 18%, 36%, and 43% in the GE group and 30%, 17%, and 39% in the SY group, respectively. The percentages of patients with subjective symptoms (e.g., daytime sleepiness/tiredness, 61% vs. 75%, p = 0.056) and scores on the Epworth sleepiness scale of ≥ 11 (18% vs. 37%, p = 0.009) were lower in the GE group, whereas there was no difference in the proportion of patients with objective symptoms (e.g., loud snoring or apnea, 70% vs. 70%) between the two groups. Patients with moderate-to-severe OSA who received continuous positive airway pressure (CPAP) therapy were fewer in the GE group (34% vs. 65%, p = 0.001).

CONCLUSION

A large percentage of patients with OSA diagnosed incidentally while undergoing GE-CS had moderate-to-severe disease but refused CPAP as they often had few subjective symptoms.

Evaluation of a novel simulation-based training for urgent laryngectomy care

BACKGROUND

Laryngectomy (removal of the larynx, usually due to cancer) results in significant anatomical changes requiring specific clinical skills to safely manage the airway and support altered communication. It is crucial that healthcare professionals understand how to support people with laryngectomy, particularly in emergency care when their usual healthcare teams will not be present. Provision of laryngectomy training is limited. Existing education approaches fail to fully meet the needs of healthcare professionals, which in turn impacts on the provision of intervention to people with laryngectomy. With increasing evidence for simulation in pedagogical literature, this study explores how this approach can be used to support clinical skill education and improve urgent laryngectomy care. The aim of this study was to establish if a simulation-based approach is a feasible method of enhancing healthcare professional knowledge and confidence to provide emergency care to people with laryngectomy.

METHODS

A simulation-based training programme was piloted with delegates from a range of healthcare professions, over three separate study days. Immersive simulation scenarios were facilitated within a medical simulation centre using a modified SimMan mannequin, specially created models and prosthetics. Post-simulation debriefings were held with a focus on developing clinical skills within a Human Factors approach. In addition, training incorporated a skills-based session and interactive discussion with expert patients. Training was evaluated using pre- and post-course self-evaluation and qualitative feedback. Feasibility outcomes included the percentage of eligible participants who consented to take part, and the number of participants who completed the training.

RESULTS

Twenty-eight multidisciplinary healthcare professionals registered for the training; 26 (93%) attended and completed the training activities as prescribed. Qualitative data indicated that simulation, debrief and skills practice were all perceived as important training aspects. Participants placed particular value on the simulated resuscitation scenario. Self-assessed composite knowledge scores and individual knowledge-item scores increased significantly post-training (p =  < 0.001-0.04). Reflective of participants' emphasis on resuscitation, knowledge of post-laryngectomy resuscitation requirements increased significantly post-training (p =  < 0.001).

CONCLUSIONS

Simulation-based training is a feasible method of clinical skill acquisition for urgent laryngectomy care. Further research is needed to assess whether competence is maintained over time, and whether Human Factors learning generalises to clinical practice. Wider study could incorporate assessment of the impact of the training on people with laryngectomy's experiences of urgent care and potential impact on hospital flow.

Effect of Helicobacter pylori infection on metabolic and bariatric surgical complications: a systematic review and meta-analysis

More papers have discussed the importance of preoperative detection and eradication of Helicobacter pylori (HP) in patients before and after Metabolic and Bariatric Surgery (MBS). This systematic review and meta-analysis aimed to evaluate the role of preoperative H. pylori eradication vs non-treatment in the development of post-op complications in the setting of bariatric and metabolic surgery. This study aimed to evaluate the effect of Helicobacter pylori (HP) on metabolic and bariatric surgical complications through a systematic review and meta-analysis. A systematic search on the influence of HP infection on postoperative complications in bariatric surgery was conducted. The methodological quality of the included studies was rated using the Newcastle-Ottawa Rating scale. In case of consistent reporting of the data, a meta-analysis was performed. A total of 19 studies containing 261,186 patients were included. The mean age of the patients was 41.88 ± 7.40 years with a mean BMI of 45.53 ± 3.16 kg/m2. The mean follow-up was 21.72 months (range: 1-96 months). Testing for HP infections was often done using an esophagogastroduodenoscopy in combination with biopsy (42%). A urea breath test (59%) was the most common tool to confirm eradication. To eradicate HP, 2 weeks of PPI with antibiotics, 1 week of PPI with antibiotics, and PPI alone without antibiotics were used in 18 (67%), 3 (11%), and 6 (22%) studies, respectively. The prevalence of complications among patients with positive/negative HP was not significantly different (P > 0.05). In HP patients without preoperative eradication, odds ratio of bleeding was 1.48 (95% CI 0.80-2.73), ulcer was 6.88 (95% CI 5.60-8.45), leakage was 1.73 (95% CI 0.81-3.68), stricture was 1.13 (95% CI 0.30-4.21), and abscesses was 3.01 (95% CI 0.85-10.65). Helicobacter pylori infection is associated with potential postoperative complications, and therefore, it needs adequate treatment.

Two Cases of Single-Incision Laparoscopic Surgery for Sigmoid Colon and Rectal Cancer in Situs Inversus Totalis

INTRODUCTION

Situs inversus totalis (SIT) is a rare congenital disorder characterized by the complete inverted transposition of the thoracic and abdominal viscera. This anatomical variation complicates laparoscopic surgery, and there are currently no reports of single-incision laparoscopic surgery (SILS) for patients with sigmoid colon cancer or rectal cancer with SIT.

CASE PRESENTATION

We performed SILS on 2 patients with sigmoid colon and rectal cancers who also had SIT. The first case involved a 64-year-old woman with sigmoid colon cancer. A 3.5 cm umbilical incision was made, and SILS was performed using a single-port surgical device with three 5 mm trocars placed in the incision. The sigmoid colon was resected with a linear stapler, which required switching from a 5 mm trocar to a 12 mm trocar. Laparoscopic anastomosis was performed using the double-stapling technique. The second case involved an 81-year-old man with dual cancers located in the sigmoid colon and lower rectum, 8 cm from the anal verge. The abdominal approach was performed using SILS, similar to the first case, along with a transanal total mesorectal excision (TaTME) from the perineum by 2 teams. Anastomosis was performed laparoscopically using a single-stapling technique. Neither patient experienced postoperative complications, and both remained free of recurrence at 42 and 7 months, respectively.

CONCLUSIONS

SILS is a feasible approach for patients with sigmoid colon cancer or rectal cancer and SIT.

Gastrointestinal disease in end-stage renal disease

When kidney function declines to a point where it can no longer maintain life and requires renal replacement therapy (i.e. renal transplant or dialysis), it is called end-stage renal disease (ESRD). Patients with ESRD often experience a range of gastrointestinal (GI) symptoms, with prevalence rates reported as high as 77%-79%. These symptoms and pathologies arise from various factors, including electrolyte imbalance, fluid imbalance, toxin buildup, uremia, medications, dietary and lifestyle restrictions, and the effects of dialysis. GI diseases in patients with renal failure can be further categorized into upper GI, small bowel, and lower GI issues. Common conditions include gastroesophageal reflux disease, nausea and vomiting, dysmotility within the esophagus and stomach, upper GI bleeding, peptic ulcer bleeding, angioectasia, irritable bowel syndrome, mesenteric ischemia, angiodysplasia, diverticular disease, constipation, pancreatitis, and diseases associated with peritoneal dialysis peritonitis and peritoneal stenosis. This review assesses the existing literature on the different GI diseases among individuals with ESRD, shedding light on their pathophysiology and prevalence.

The Role of Endoscopy in the Postoperative Management of Patients Treated for Esophageal Atresia: 20 Years of Experience

Background/Objectives: Endoscopy plays a well know role in managing patients treated for esophageal atresia (EA), allowing the detection and treatment of complications such as anastomotic strictures, gastroesophageal reflux disease, and other structural abnormalities, during the critical first year of life. Nevertheless, we would like to underline the importance of endoscopy early in the follow-up of patients treated for EA, as recommended by guidelines. This study evaluates the role of endoscopy in managing patients treated for esophageal atresia (EA), focusing on the detection and treatment of complications such as anastomotic strictures, gastroesophageal reflux disease, and other structural abnormalities during the critical first year of life. Methods: A retrospective analysis was conducted over 20 years at our institution. Clinical assessments were performed at 3, 6, and 9 months to monitor growth, feeding tolerance, and proton pump inhibitor (PPI) adjustments. Endoscopic evaluations were conducted under general anesthesia around one year of age. Results: Between 2003 and 2023, 84 patients underwent surgical treatment for EA, with complete follow-up data available for 77 patients. Complications occurred in 21 patients (27%), including 4 patients (5.5%) with isolated anastomotic stricture, 8 patients (10%) with reflux esophagitis, 8 patients (10%) affected by both stenosis and reflux, and 1 case (1.5%) of fistula recurrence. Endoscopic dilatations for stenosis were successful, averaging three procedures per patient. Growth parameters were normal in 91% of cases by the first year. Conclusions: Esophagogastroscopy is a safe and effective tool for diagnosing and managing complications after EA repair in infants. The minimally invasive procedure could allow early detection of esophagitis and strictures, offering significant therapeutic benefits. Given these important results, we would like to recommend its use in routine follow-up care.

Risk factors and prevention and treatment methods of anastomotic stricture after esophageal atresia repair: a literature review

This review examines the common risk factors associated with anastomotic stricture (AS) following esophageal atresia (EA) repair and evaluates the current understanding and clinical practices concerning esophageal dilation, which remains the predominant therapeutic approach. We present emerging evidence on adjunctive therapies for recurrent and refractory strictures, including esophageal stenting, endoscopic incision therapy, mitomycin C application, local steroid injections, cell sheet transplantation, and surgical interventions. A comprehensive literature review was conducted using PubMed, with a cutoff date of December 31, 2024, encompassing all relevant studies and reviews pertinent to this topic, with a particular emphasis on refractory and recurrent strictures. Given the scarcity of evidence-based data on AS in children with EA, we also critically analyze findings from adult literature and studies addressing esophageal strictures caused by various etiologies to provide a more comprehensive understanding. The pathogenesis of AS is multifactorial, with a key contributing factor being the significant gap between the proximal and distal esophageal segments. This anatomical disparity increases anastomotic tension, thereby elevating the likelihood of stricture formation. A thorough identification and detailed understanding of the risk factors associated with AS are crucial for enhancing patient outcomes and developing effective preventive strategies. Currently, the evidence regarding esophageal dilation is insufficient to establish the superiority of any single technique, particularly between balloon and bougie dilators. Recurrent and refractory strictures remain a challenge, as no pharmacological and mechanical adjunctive interventions have demonstrated sufficient feasibility, efficacy, and safety to fundamentally change clinical practice. While some results show promise, transformative outcomes have not yet been achieved, and further research is needed to establish evidence-based best treatment strategies.

Design and evaluation of new user control devices for improved ergonomics in flexible robotic endoscopy

Background

The ergonomics of flexible endoscopes require improvement as the current design carries a high risk of musculoskeletal injury for endoscopists. Robotic systems offer a solution by separating the endoscope from the control handle, allowing a focus on ergonomics and usability. Despite the increasing interest in this field, little attention has been paid towards developing ergonomic human input devices. This study addresses two key questions: How can handheld control devices for flexible robotic endoscopy be designed to prioritize ergonomics and usability? And, how effective are these new devices in a simulated clinical environment?

Methods

Addressing this gap, the study proposes two handheld input device models for controlling a flexible endoscope in four degrees of freedom (DOFs) and an endoscopic instrument in three DOFs. A two-stage evaluation was conducted with six endoscopists evaluating the physical ergonomics and a final clinical user evaluation with seven endoscopists using a virtual colonoscopy simulator with proportional velocity and position mapping.

Results and discussion

Both models demonstrated clinical suitability, with the first model scoring 4.8 and the second model scoring 5.2 out of 6 in the final evaluation. In sum, the study presents two designs of ergonomic control devices for robotic colonoscopy, which have the potential to reduce endoscopy-related injuries. Furthermore, the proposed colonoscopy simulator is useful to evaluate the benefits of different mapping modes. This could help to optimize the design and control mechanism of future control devices.

Hereditary Colorectal Cancer Syndromes: Small Bowel Cancer Risk and Endoscopic Surveillance Strategies

Background: Hereditary colorectal cancer syndromes, including familial adenomatous polyposis (FAP), Lynch syndrome (LS), and Peutz-Jeghers syndrome (PJS), are associated with an increased risk of small bowel cancer (SBC). Due to the low incidence and non-specific presentation of SBC, effective surveillance strategies are essential for early detection and management. This review aims to evaluate and compare current endoscopic techniques for small bowel surveillance in these patients. Methods: A comprehensive review was conducted using peer-reviewed studies sourced from PubMed. Various endoscopic modalities, including capsule endoscopy (CE), device-assisted enteroscopy (DAE), and intraoperative enteroscopy (IOE), were assessed for their diagnostic yield, safety, and clinical utility. Surveillance recommendations of the different syndromes were also examined. Results: CE offers high sensitivity but lacks histological sampling capability. DAE, including double-balloon enteroscopy (DBE) and single-balloon enteroscopy (SBE), enables direct visualization, biopsy, and therapeutic interventions, albeit with greater procedural complexity. In FAP, duodenal surveillance follows the Spigelman classification to stratify cancer risk, while jejunal and ileal polyps remain less studied. LS patients have an increased SBC risk, warranting tailored endoscopic approaches. In PJS, surveillance aims to mitigate intussusception risks and allow early malignancy detection. Conclusions: Optimized surveillance strategies in hereditary colorectal cancer syndromes require a multimodal approach, integrating advanced endoscopic techniques with genetic risk stratification. Centralized care in tertiary centers improves outcomes by ensuring standardized surveillance protocols and enhancing early cancer detection. Artificial intelligence (AI) applied to CE and DAE is shaping promising prospects for the future surveillance of small bowel polyps by enhancing diagnostic accuracy and reducing the duration of the diagnostic process. Further research should investigate AI-assisted imaging and molecular biomarkers to optimize screening strategies.

Magnet-assisted diverticuloplasty for treating the symptomatic esophageal diverticulum: a case series (with video)

BACKGROUND

The development of the magnetic compression technique (MCT) for the gastrointestinal (GI) tract has been widely applied in the treatment of biliary strictures, esophageal atresia, and GI anastomoses. Our team combined the MCT and minimally invasive endoscopic operation to propose a novel alternative procedure called magnet-assisted diverticuloplasty (MAD) for treating various esophageal diverticula. This case series aimed to report the effectiveness, safety, and our experience of MAD.

METHODS

This retrospective case series included patients with symptomatic esophageal diverticulum (SED) who underwent MAD between November 2017 and June 2022 in West China Hospital, Sichuan University. The patients' symptomatic scores were accessed by Eckardt symptomatic scores. The telephone follow-up period ended in March 2023. The primary outcome of the study was clinical success. Secondary outcomes included the technical success of MAD, procedure time, hospitalization, recurrence, and adverse events.

RESULTS

We reported 6 patients with SED who underwent MAD (3 with Zenker's, 1 with middle, and 2 with lower esophageal diverticulum). The technical success rate was 100% (6/6) and no adverse events were reported. The median procedural duration was 22.5 min (interquartile range (IQR) 18.5). The mean hospitalization was 2 days (range 1-3). The median time of follow-up endoscopy was on postoperative day 18 (IQR 31), revealing a shortened diverticular septum under endoscopic examination. After a median telephone follow-up of 23 months (IQR 36), the median total symptomatic score decreased significantly from 4.00 (IQR 3.25) to 1.00 (IQR 2.00) (P = 0.015). The clinical success rate was 83.3% (5/6), and only one patient had recurrent symptoms two years after MAD.

CONCLUSION

MAD provided a novel method for treating SED. Our limited experience suggested that MAD could be minimally invasive and effective. More extensive, multicenter prospective studies were needed to assess this technique further.

Endoscopic Management of Perforations, Gastrointestinal Leaks, and Fistulae

Background

Gastrointestinal leaks and fistulae are serious conditions with the potential to be life-threatening, and they are of significant relevance for both endoscopists and surgeons. These conditions may present in a wide variety of ways in clinical settings. These defects may arise from malignant or inflammatory conditions, or may be iatrogenic, occurring after surgery, endoscopic, or radiation therapy. The therapeutic approach to these conditions is often complex and is associated with a high incidence of morbidity. Consequently, in recent years, advances in interventional endoscopic techniques have earned a pivotal role in the management of gastrointestinal defects, both as a first-line treatment and as a rescue therapy. The advent of clips and luminal stents marked the advent of gastrointestinal defect therapy. However, the advent of innovative endoscopic closure devices and techniques, such as endoscopic internal drainage, suturing systems, and vacuum therapy, has broadened the indications of endoscopy for the management of gastrointestinal wall defects. This is because surgical therapy still tends to be complex and is plagued by high rates of morbidity.

Summary

A successful endoscopic management of gastrointestinal leaks and fistulae necessitates a tailored and multidisciplinary approach, based on the aforementioned factors, in addition to local expertise and the availability of devices. Moreover, a standardized evidence-based algorithm for the management of GI defects is still not available. Endotherapy represents a minimally invasive, effective approach with lower morbidity and mortality compared to surgical techniques.

Gender disparities and woman-specific trends in Barrett's esophagus in the United States: An 11-year nationwide population-based study

BACKGROUND

Barrett's esophagus (BE) is a known premalignant precursor to esophageal adenocarcinoma (EAC). The prevalence rates continue to rise in the United States, but many patients who are at risk of EAC are not screened. Current practice guidelines include male gender as a predisposing factor for BE and EAC. The population-based clinical evidence regarding female gender remains limited.

AIM

To study comparative trends of gender disparities in patients with BE in the United States.

METHODS

A nationwide retrospective study was conducted using the 2009-2019 National Inpatient Sample (NIS) database. Patients with a primary or secondary diagnosis code of BE were identified. The major outcome of interest was determining the gender disparities in patients with BE. Trend analysis for respective outcomes for females was also reported to ascertain any time-based shifts.

RESULTS

We identified 1204190 patients with BE for the study period. Among the included patients, 717439 (59.6%) were men and 486751 (40.4%) were women. The mean age was higher in women than in men (67.1 ± 0.4 vs 66.6 ± 0.3 years, P < 0.001). The rate of BE per 100000 total NIS hospitalizations for males increased from 144.6 in 2009 to 213.4 in 2019 (P < 0.001). The rate for females increased from 96.8 in 2009 to 148.7 in 2019 (P < 0.001). There was a higher frequency of obesity among women compared to men (17.4% vs 12.6%, P < 0.001). Obesity prevalence among females increased from 12.3% in 2009 to 21.9% in 2019 (P < 0.001). A lower prevalence of smoking was noted in women than in men (20.8% vs 35.7%, P < 0.001). However, trend analysis showed an increasing prevalence of smoking among women, from 12.9% in 2009 to 30.7% in 2019 (P < 0.001). Additionally, there was a lower prevalence of alcohol abuse, Helicobacter pylori (H. pylori), and diabetes mellitus among females than males (P < 0.001). Trend analysis showed an increasing prevalence of alcohol use disorder and a decreasing prevalence of H. pylori and diabetes mellitus among women (P < 0.001).

CONCLUSION

The prevalence of BE among women has steadily increased from 2009 to 2019. The existing knowledge concerning BE development has historically focused on men, but our findings show that the risk in women is not insignificant.

Complications of Endoscopic Retrograde Cholangiopancreatography

Up to 1 in 6 patients will experience an unplanned hospitalization after endoscopic retrograde cholangiopancreatography (ERCP), largely for the evaluation and management of adverse events. Therefore, a commitment to the prevention, early recognition, and effective rescue of complications related to ERCP is critical toward improving outcomes. ERCP is most often complicated by acute pancreatitis, bleeding, infection, or perforation, although myriad other adverse events may occur. The prevention of post-ERCP pancreatitis has been the area of greatest interest and progress in the last decade, but the application of evidence-based prophylactic measures remains inconsistent. Innovations in stent, hemostasis, and perforation closure technology now allow effective and efficient endoscopic management of several important nonpancreatitis complications. Overall, our ability to prevent and treat ERCP-related adverse events has improved substantially, amplifying the importance of a high level of suspicion for and a thorough understanding of these events.

The Sheep Head Versus the Pig Head as a Training Model for Sialendoscopy

OBJECTIVE

Sialendoscopy is a minimally invasive technique for treating inflammatory salivary gland diseases, requiring hands-on training due to its steep learning curve. While pig heads have been the standard training model for over two decades, sheep heads have recently emerged as an alternative. This study evaluates the efficiency of sheep heads for sialendoscopy training in newcomers.

METHODS

Participants of the 32nd International Sialendoscopy Hands-on Course (Geneva, 2023) performed sialendoscopies on fresh pig and sheep heads. Self-assessment questionnaires were completed pre- and post-training, with procedures rated on a Likert scale. Tutors evaluated participants using standardized assessments and recorded procedural times.

RESULTS

Among 52 participants from 27 countries, significant improvement in diagnostic sialendoscopy comfort was reported for both models post-training. Female participants demonstrated higher success rates than male participants in diagnostic (2.8 vs. 2.5, p = 0.03) and therapeutic (2.9 vs. 2.4, p = 0.03) procedures. More participants successfully cannulated the parotid duct on sheep heads, while submandibular gland performance was comparable across models. Self-assessments favored sheep for parotid (63%) and pigs for submandibular (79%). Overall, 53% preferred the pig model, while 47% preferred the sheep.

CONCLUSION

Both models are effective for training, with sheep heads offering advantages for parotid duct procedures. Despite the pig model's broader applications, logistical, cultural, and ethical constraints make sheep heads a viable alternative for sialendoscopy training.

LEVEL OF EVIDENCE

N/A.

The impact of inter-hospital transfer on outcomes in lower gastrointestinal bleeding: a retrospective cohort analysis

BACKGROUND

This study investigates the role of interhospital transfer (IHT) in lower gastrointestinal bleeding (LGIB) management and its impact on patient outcomes, focusing on mortality rates, complication occurrences, procedural performance, and resource utilization in patients diagnosed with LGIB.

METHODS

This retrospective cohort study used data from the National Inpatient Sample database from 2017 to 2020. It included adult patients diagnosed with LGIB, assessing the impact of IHT on outcomes such as mortality, complication rates, procedural performance, and resource utilization. Adjusted odds ratios (AOR) and adjusted mean differences (AMD) were used to evaluate these impacts.

RESULTS

A total of 393,495 LGIB patients were analyzed, with 31,565 (8.02%) undergoing interhospital transfer. Transferred patients exhibited significantly higher inpatient mortality (AOR 1.96, P < 0.01). They also faced increased risks of acute kidney injury (AOR 1.32, P < 0.01), septic shock (AOR 2.11, P < 0.01), and intensive care unit admission (AOR: 2.61, P < 0.01). These patients were more likely to undergo interventional radiology-guided embolization (AOR 2.68, P < 0.01) and showed variations in colonoscopy procedures. Resource utilization was also higher among transferred patients, with an increased mean length of hospital stay by 4.37 days (P < 0.01) and higher hospitalization charges (mean difference $61,239, P < 0.01).

CONCLUSION

Interhospital transfer in LGIB patients is associated with increased mortality, greater resource utilization, and the need for more specialized procedural interventions. Enhanced clinical vigilance and tailored resource allocation for transferred LGIB patients are necessary. Future research should optimize care strategies for these high-risk patients.

A semi-supervised convolutional neural network for diagnosis of pancreatic ductal adenocarcinoma based on EUS-FNA cytological images

BACKGROUND

The cytological diagnostic process of EUS-FNA smears is time-consuming and manpower-intensive, and the conclusion could be subjective and controversial. Moreover, the relative lack of cytopathologists has limited the widespread implementation of Rapid on-site evaluation (ROSE) presently. Therefore, this study aimed to establish an AI system for the detection of pancreatic ductal adenocarcinoma (PDAC) based on EUS-FNA cytological images.

METHODS

We collected 3213 unified magnification images of pancreatic cell clusters from 210 pancreatic mass patients who underwent EUS-FNA in four hospitals. A semi-supervised CNN (SSCNN) system was developed to distinguish PDAC from Non-PDAC. The internal and external verifications were adopted and the diagnostic accuracy was compared between different seniorities of cytopathologists. 33 images of "Atypical" diagnosed by expert cytopathologists were selected to analyze the consistency between the system and definitive diagnosis.

RESULTS

The segmentation indicators Mean Intersection over Union (mIou), precision, recall and F1-score of SSCNN in internal and external testing sets were 88.3%, 93.21%,94.24%, 93.68% and 87.75%, 93.81%, 93.14%, 93.48% successively. The PDAC classification indicators of the SSCNN model including area under the ROC curve (AUC), accuracy, sensitivity, specificity, PPV and NPV in the internal testing set were 0.97%, 0.95%, 0.94%, 0.97%, 0.98%, 0.91% respectively, and 0.99%, 0.94%, 0.94%, 0.95%, 0.99%, 0.75% correspondingly in the external testing set. The diagnostic accuracy of senior, intermediate and junior cytopathologists was 95.00%, 88.33% and 76.67% under the binary diagnostic criteria of PDAC and non-PDAC. In comparison, the accuracy of the SSCNN system was 90.00% in the dataset of man-machine competition. The accuracy of the SSCNN model was highly consistent with senior cytopathologists (Kappa = 0.853, P = 0.001). The accuracy, sensitivity and specificity of the system in the classification of "atypical" cases were 78.79%, 84.20% and 71.43% respectively.

CONCLUSION

Not merely tremendous preparatory work was drastically reduced, the semi-supervised CNN model could effectively identify PDAC cell clusters in EUS-FNA cytological smears which achieved analogically diagnostic capability compared with senior cytopathologists, and showed outstanding performance in assisting to categorize "atypical" cases where manual diagnosis is controversial.

TRIAL REGISTRATION

This study was registered on clinicaltrials.gov, and its unique Protocol ID was PJ-2018-12-17.

An emerging entity of gastric adenocarcinoma: clinicopathological features and differential diagnosis of gastric adenocarcinoma of fundic-gland type in 25 retrospective cases

Gastric adenocarcinoma of fundic-gland type (GA-FG) is a rare gastric cancer with an extremely low rate of vascular and lymph node metastases. It can be cured with endoscopic submucosal dissection (ESD). However, inadequate understanding of GA-FG may lead to overtreatment, negatively impacting patient quality of life. We analyzed the clinical, endoscopic, and pathological characteristics of 25 cases of GA-FG. Immunohistochemical markers (CEA, MUC2, MUC5AC, MUC6, H + /K + ATPase, Pepsinogen-I, CgA, P53, and Ki67) were used to differentiate GA-FG from conventional gastric adenocarcinoma (CGA), neuroendocrine tumor (NET), gastric adenocarcinoma of fundic-gland mucosa type (GA-FGM), and other related conditions. The expression of β-catenin and Yes-associated protein (YAP) was also analyzed. All 25 GA-FG cases were located in the proximal stomach, with maximum diameter ranging from 4 to 20 mm. Histologically, the tumors displayed branching, mutual pulling or fusion of glandular duct structures, occasional sieve-like patterns, and mild cellular atypia. Some cases exhibited foveolar hyperplasia, with indistinct boundaries between proliferating and normal epithelium. The absence of an abrupt transition at low magnification was a critical feature to distinguish GA-FG from GA-FGM. Immunophenotypically, GA-FG resembled gastric-type adenocarcinoma with a low Ki67 index. The wild-type expression of P53 and varying Ki67 intensity patterns were helpful for diagnosing non-neoplastic hyperplasia. Abnormal β-catenin nuclear expression was found in 1 case, while 6 out of 12 showed positive YAP expression. GA-FG is a well-differentiated adenocarcinoma mimicking gastric fundic glands growth patterns. Accurate diagnosis of GA-FG is essential to accurate treatment and avoid oversurgery.

Imaging and interventions in vascular malformations of the gastrointestinal tract

Vascular malformations of the gastrointestinal (GI) tract are a rare yet significant cause of GI bleeding, that can present at any age and require a high index of suspicion for timely diagnosis. While the majority of lesions may be asymptomatic and detected incidentally on imaging, they may also present with anemia if there is occult blood loss, as acute GI bleeding, or as lead points for intussusception. The presence of multiple vascular malformations may be associated with underlying syndromes, such as Hereditary Hemorrhagic Telangiectasia syndrome and Klippel-Trénaunay syndrome. While luminal endoscopy is the first-line diagnostic test to evaluate overt and occult GI bleeding, imaging plays a very significant role in detecting these vascular malformations and planning the best treatment approach. In this review, we describe the various imaging findings of GI tract vascular malformations and available treatment options, focusing on endovascular interventional treatments where possible.

Establishing and popularizing a standard pathological diagnostic model of endoscopic submucosal dissection specimens in China

BACKGROUND

Endoscopic submucosal dissection (ESD) is a standardized therapeutic approach for early carcinoma of the digestive tracts. In this regard, the process of histopathological diagnosis requires standardization. However, the uneven development of healthcare in China, especially in eastern and western China, creates challenges for sharing a standardized diagnostic process.

AIM

To optimize the process of ESD specimen sampling, embedding and slide production, and to provide complete and accurate pathological reports.

METHODS

We established a practical process of specimen sampling, created standardized reporting templates, and trained pathologists from neighboring hospitals and those in the western region. A training effectiveness survey was conducted, and the collected data were assessed by the corresponding percentages.

RESULTS

A total of 111 valid feedback forms have been received, among which 58% of the participants obtained photographs during specimen collection, whereas the percentage increased to 79% after training. Only 58% and 62% of the respondents ensured the mucosal tissue strips were flat and their order remained unchanged; after training, these two proportions increased to 95% and 92%, respectively. Approximately half the participants measured the depth of the submucosal infiltration, which significantly increased to 95% after training. The percentage of pathologists who did not evaluate lymphovascular invasion effectively reduced. Only 22% of the participants had fixed clinic-pathological meetings before training, which increased to 49% after training. The number of participants who had a thorough understanding of endoscopic diagnosis also significantly increased.

CONCLUSION

There have been significant improvements in the process of specimen collection, section quality, and pathology reporting in trained hospitals. Therefore, our study provides valuable insights for others facing similar challenges.

Leucine-rich Alpha-2 glycoprotein could be clinically useful in active and postoperative Crohn's disease

The clinical usefulness of serum leucine-rich alpha-2 glycoprotein (LRG) levels as a surrogate marker of endoscopic activity including postoperative recurrence in patients with Crohn's disease (CD) remains unclear, and LRG production in the small intestinal mucosa has not been explored. The present study investigated the usefulness of serum LRG to ascertain endoscopic activity, the secretion of LRG from the small intestinal mucosa, and the significance of LRG as a predictor of postoperative disease course. We included 364 patients who underwent transanal endoscopy at Osaka University Hospital. Serum LRG correlated highly with endoscopic severity (LRG, r = 0.65; CRP, r = 0.37) and reflected strictly moderate endoscopic activity better than serum CRP. Especially, serum LRG reflected mucosal healing even in patients whose inflammation was confined to the small intestine. In multivariate analyses, serum LRG was an independent factor influencing mucosal healing. LRG was more strongly expressed in the inflamed mucosa of the small intestine compared with that in uninflamed mucosa, and serum LRG was more strongly correlated with postoperative small intestinal recurrence severity than CRP (LRG, r = 0.62; CRP, r = 0.32). In conclusion, serum LRG is a useful surrogate marker of endoscopic CD severity and activity, with increased LRG expression in the small bowel predicting postoperative recurrence.

Effects of a training system that tracks the operator's gaze pattern during endoscopic submucosal dissection on hemostasis

BACKGROUND

The early acquisition of skills required to perform hemostasis during endoscopy may be hindered by the lack of tools that allow assessments of the operator's viewpoint. Understanding the operator's viewpoint may facilitate the skills.

AIM

To evaluate the effects of a training system using operator gaze patterns during gastric endoscopic submucosal dissection (ESD) on hemostasis.

METHODS

An eye-tracking system was developed to record the operator's viewpoints during gastric ESD, displaying the viewpoint as a circle. In phase 1, videos of three trainees' viewpoints were recorded. After reviewing these, trainees were recorded again in phase 2. The videos from both phases were retrospectively reviewed, and short clips were created to evaluate the hemostasis skills. Outcome measures included the time to recognize the bleeding point, the time to complete hemostasis, and the number of coagulation attempts.

RESULTS

Eight cases treated with ESD were reviewed, and 10 video clips of hemostasis were created. The time required to recognize the bleeding point during phase 2 was significantly shorter than that during phase 1 (8.3 ± 4.1 seconds vs 23.1 ± 19.2 seconds; P = 0.049). The time required to complete hemostasis during phase 1 and that during phase 2 were not significantly different (15.4 ± 6.8 seconds vs 31.9 ± 21.7 seconds; P = 0.056). Significantly fewer coagulation attempts were performed during phase 2 (1.8 ± 0.7 vs 3.2 ± 1.0; P = 0.004).

CONCLUSION

Short-term training did not reduce hemostasis completion time but significantly improved bleeding point recognition and reduced coagulation attempts. Learning from the operator's viewpoint can facilitate acquiring hemostasis skills during ESD.

Stricture prevention after circumferential endoscopic submucosal dissection of the esophagus: Proactive vs reactive strategies

In this editorial, we explored currently available strategies for reducing the occurrence of esophageal strictures following circumferential endoscopic submucosal dissection. This manuscript provided a comprehensive overview of the various strategies including recent insights from Wang et al. To this end, stenosis-related symptoms such as dysphagia and vomiting can severely affect a patient's quality of life. Therefore, we assess the efficacy of both reactive and proactive measures, ranging from traditional approaches like endoscopic balloon dilation and steroid administration to more advanced techniques, including tissue engineering and polyglycolic acid sheet placement. However, no single treatment has shown high efficacy, particularly for resections involving the entire circumference. Despite these shortcomings, the combination of different strategies may improve patient outcomes, although further large-scale studies are needed for validation.

When ectopic bone forms in the abdomen: The diagnostic and management challenges of heterotopic mesenteric ossification

Heterotopic mesenteric ossification (HMO) is a rare medical condition, with < 100 cases reported globally by 2024. This disorder is characterized by abnormal bone tissue formation within the mesentery, often following abdominal trauma, ischemia, or infection. This editorial reviews the case presented by Zhang et al, involving a 34-year-old male who developed persistent left lower abdominal pain after sustaining blunt trauma to the abdomen. Diagnostic challenges arose due to the rarity and nonspecific presentation of HMO, which shares histopathological features with conditions such as myositis ossificans and necessitates differentiation from malignancies like sarcomas. Advanced imaging revealed calcifications suggestive of HMO, but definitive diagnosis was achieved only through surgical resection and histopathological analysis, which confirmed the presence of ectopic bone formation. Although benign, HMO can result in severe complications, such as bowel perforation or obstruction. Therefore, awareness of HMO is crucial for clinicians to ensure timely and appropriate treatment.

Long-term outcomes of endoscopic submucosal dissection for gastric dysplasia and early neoplasia in a United Kingdom Caucasian population

BACKGROUND

Endoscopic submucosal dissection (ESD) is increasingly used to treat gastric dysplasia and early neoplasia in the West. Unlike Eastern countries, data for Caucasian patients in the United Kingdom is limited due to its limited implementation in a few tertiary centres.

AIM

To evaluate the outcomes of ESD on gastric dysplasia and neoplasia in Caucasian patients.

METHODS

Our ten-year retrospective study at a single tertiary centre included data spanning from May 2012 to July 2023. The efficacy of ESD on gastric dysplasia and early neoplasia was measured using parameters set out by the National Institute for Health and Care Excellence, which include en-bloc and curative resection (CR) rates, local recurrence and survival rates.

RESULTS

ESD was attempted on 111 lesions in 93 patients. 95.0% of completed procedures achieved endoscopic clearance. 74.3% were en-bloc resections and the rest were hybrid ESD with piecemeal resections. In all, 34.7% achieved histological CR. Overall, disease recurrence was 10.9% at latest follow-up (63 months, median follow-up). Importantly 100% of lesions in the CR group showed no disease recurrence at subsequent and latest follow-up. In the Indeterminate and Non-CR group, 18.8% of lesions showed disease recurrence at subsequent endoscopic follow-ups. ESD changed the histological staging of 44.5% of lesions. Immediate complications were observed in 9.9% of all ESD procedures. The median survival time was 69 months post-ESD. The mean age at death is 82.2 years old.

CONCLUSION

The study affirms the long-term efficacy and safety of ESD for gastric dysplasia and early neoplasia in Caucasian patients.

Endoscopic full-thickness resection: A definitive solution for local complete resection of small rectal neuroendocrine neoplasms

BACKGROUND

Recently, several endoscopic techniques have been used to improve the R0 resection rate of rectal neuroendocrine neoplasms (R-NENs). However, none of these methods can achieve 100% complete resection (CR), particularly in the vertical direction. Endoscopic full-thickness resection (EFTR) has proven to be an effective method for the treatment of submucosal tumors but is seldom utilized in the eradication of R-NENs.

AIM

To review cases of R-NENs removed using EFTR and to evaluate the safety and efficacy of this technique.

METHODS

This retrospective cohort study enrolled 160 patients with pathologically confirmed R-NENs, including 132 who underwent endoscopic submucosal dissection (ESD) and 28 who underwent EFTR. Lesions were categorized as < 1 cm, 1-2 cm, and > 2 cm in size. CR rate, en bloc resection rate, operation time, and complications were evaluated. Subgroup analyses and follow-up were also performed.

RESULTS

EFTR achieved 100% CR rates for lesions < 1 cm and 1-2 cm, compared with 67.0% and 50.0%, respectively, in the ESD group. En bloc resection and successful removal of the R-NENs were achieved in all patients. Meanwhile, EFTR showed performance comparable to ESD in terms of operation time, hospitalization cost, and postoperative adverse events, except for a one-day longer hospital stay. We also analyzed the invasion depth of R-NENs based on full-thickness specimens. The data showed that 80% of lesions (< 1 cm) and 85.7% of lesions (1-2 cm) had invaded the SM3 level or deeper at the time of resection. For ESD specimens, 46.6% (< 1 cm) and 89.3% (1-2 cm) of lesions had infiltrated more than 2000 μm beneath the muscularis mucosae.

CONCLUSION

EFTR has shown superior performance in the resection of small R-NENs compared with that of ESD.