Mistakes in endoscopic resection and how to avoid them

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Mistakes in endoscopic resection and how to avoid them

Alessandro Repici, Francesco Auriemma

Summary

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This article discusses common diagnostic and therapeutic mistakes in endoscopic resection of gastrointestinal lesions and proposes approaches to avoid them based on clinical experience.

Endoscopic resection is an advanced technique used to remove superficial lesions throughout the gastrointestinal tract, including the oesophagus, stomach, duodenum, small intestine, and especially the colon.
The procedure involves a multistep process including lesion detection and characterization, use of appropriate resection devices and methods, and management of malignant polyps.
Successful endoscopic resection requires training, experience, expertise, and a multidisciplinary approach.
The authors present frequently observed mistakes in their practice that have major consequences for patients and offer experience-based strategies to avoid them.
This material is most relevant for endoscopists performing or learning advanced resection techniques.

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This summary was generated by an AI large language model based on the content transcript. It is for informational purposes only and should not be considered a substitute for clinical judgment. Always rely on your professional expertise and the full clinical context when making clinical decisions.

Abstract

Endoscopic resection is a widespread, advanced endoscopic technique that can be used to remove superficial lesions in the gastrointestinal tract. Lesions present in all parts of the gastrointestinal tract, such as the oesophagus, stomach, duodenum, small intestine and, above all, colon, can be removed by endoscopic resection. Lesion detection and characterization, the use of appropriate resection devices and methods, and the management of malignant polyps are all important parts of a multistep process that requires training, experience, expertise and a multidisciplinary approach. The diagnostic and therapeutic mistakes discussed here are based on our endoscopic experience. We present the most important mistakes that are often seen in endoscopic resection in our practice and have major consequences for the patient. We propose, from our experience, a simple approach to avoid these mistakes.

Topics

Endoscopy

Citation

Auriemma F and Repici A. Mistakes in endoscopic resection and how to avoid them. UEG Education 2017; 17: 27–29

Published

2017

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Coeliac disease with David Sanders

David S. Sanders, Pradeep Mundre

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Abstract

Topics

Small Intestine & Nutrition

Published

2026

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UEG Mistakes In Articles

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Mistakes in Pancreatic exocrine insufficiency and how to avoid them

Miroslav Vujasinovic, J. Enrique Domínguez Muñoz, Matthias Löhr

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Abstract

Pancreatic exocrine insufficiency (PEI) is a common yet frequently under-recognised cause of maldigestion, malabsorption, and malnutrition. Although traditionally associated with primary pancreatic disorders such as chronic pancreatitis, cystic fibrosis, pancreatic cancer, or pancreatic surgery, it is now evident that PEI also occurs in a wide range of extra-pancreatic conditions and clinical settings. Advances in diagnostic testing and expanding clinical awareness have improved detection; however, significant misconceptions persist regarding when to suspect PEI; how to interpret diagnostic tests; and how to initiate, optimise, and monitor pancreatic enzyme replacement therapy (PERT). In everyday practice, these errors may lead to delayed diagnosis, inappropriate treatment, persistent symptoms, and preventable nutritional deficiencies. This “Mistakes in…” article highlights common pitfalls in the diagnosis and management of PEI, focusing on inappropriate reliance on faecal elastase testing, failure to recognise secondary causes, undertreatment with PERT, and inadequate nutritional assessment. By addressing these frequent mistakes, we aim to promote a more structured, patient-centred, and evidence-informed approach to PEI that improves clinical outcomes and quality of life.

Topics

Pancreas

Published

2026

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ECCO Guidelines on Therapeutics in Ulcerative Colitis: Medical Treatment

Javier P. Gisbert

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Guideline

Introduction

Ulcerative colitis [UC] is a chronic inflammatory bowel disease [IBD] characterised by colonic inflammation extending to a variable extent from the rectum. Care of the patient with UC requires appropriate input from across the multiprofessional team. These guidelines summarise the recommended medical treatment for adults with UC.

In 2022, the European Crohn’s and Colitis Organisation [ECCO] published new guidelines on the management of UC in two papers focused on the medical and surgical management of the disease.¹^,² For the 2022 UC guidelines, ECCO adopted the Grading of Recommendations Assessment, Development, and Evaluation [GRADE] approach, a systematic process for developing guidelines that addresses how to frame healthcare questions, summarise the evidence, formulate recommendations, and grade their strength and the quality of associated evidence.³ The present paper represents an update to the 2022 guidelines and focuses specifically on the medical management of UC, while a companion paper developed as part of the same process addresses optimal surgical management [ECCO Guidelines on Therapeutics in Ulcerative Colitis: Surgical Treatment].

For this iteration of the guidelines, we have introduced several new, clinically relevant questions selected by members of the guidelines group, alongside a systematic approach to reviewing and updating previous topics to incorporate new evidence and to reappraise all findings within the context of contemporary practice. We have also introduced several “practice points” to summarise evidence and provide expert recommendations in key areas where the evidence remains limited but clinical decisions are still required. In such instances, where application of the GRADE methodology may be impractical, we adopted an approach based on systematic literature review, expert discussion, and voting to reach consensus recommendations outside the formal GRADE process.

Patients living with UC can have a variable disease course.⁴ In this document, we discuss therapeutic approaches stratified by disease severity [mildly-to-moderately active and moderately-to-severely active disease]. Definitions of disease severity are commonly used to establish clinical trial inclusion criteria and may be based on several distinct assessment frameworks.⁵ It is also important to remember that these definitions capture severity at a given point in time and may not reflect the cumulative long-term burden of disease experienced by a patient.⁶

It is also important to consider disease extent when planning treatment in UC, as this may affect the optimal route of drug administration. This is typically defined according to disease involving the rectum only [proctitis], disease distal to the splenic flexure [left-sided or distal UC], or disease extending proximal to the splenic flexure [extensive UC].⁷ It should be noted that disease distribution can change⁴ and that proximal disease extension can be a negative prognostic marker.⁸

Publisher

European Crohn’s and Colitis Organisation

Guideline

Clinical Practice Guideline

Topics

IBD

Citation

Journal of Crohn's and Colitis, Volume 20, Issue 7, July 2026

Published

2026

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ECCO Guidelines on the Prevention, Diagnosis, and Management of Infections in Inflammatory Bowel Disease

Henit Yanai

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Guideline

Introduction

The therapeutic landscape of inflammatory bowel disease [IBD] has undergone a profound transformation with the advent of novel immunosuppressive and biologic agents. These advancements have revolutionised the management of Crohn’s disease [CD] and ulcerative colitis [UC], enabling tighter control of inflammation and significantly improved patient outcomes. However, while older treatment strategies, including prolonged corticosteroids, purine analogues, and anti-tumour necrosis factor [TNF]/thiopurine combination therapy, carried a substantial immunosuppressive burden, the expanding therapeutic armamentarium introduces new agents with distinct infection risk profiles that require updated, evidence-based guidance. By definition, opportunistic infections are infections caused by organisms that infrequently induce disease in immunocompetent hosts but can result in significant morbidity or mortality in immunocompromised individuals. As treatment strategies increasingly rely on potent modulation of the immune system, ranging from traditional thiopurines to advanced small molecules, a structured, evidence-based approach to infection prevention, diagnosis, and management has become indispensable for the clinician. The European Crohn’s and Colitis Organisation [ECCO] has long recognised this clinical imperative, previously publishing consensus statements in 2009 and 2014, followed by a comprehensive guideline in 2021. This 2026 update is warranted by the rapid expansion of the therapeutic armamentarium, specifically the introduction of newer small molecules, advanced biologics, and evolving vaccination strategies. This update integrates the most recent data on risk stratification, viral, bacterial, mycobacterial, and vaccine-preventable infections, emphasising a preventative strategy tailored to the contemporary IBD treatment paradigm.

Publisher

European Crohn’s and Colitis Organisation

Guideline

Clinical Practice Guideline

Topics

IBD

Citation

Journal of Crohn's and Colitis, Volume 20, Issue 7, July 2026

Published

2026

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UEG Mistakes In Articles

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Mistakes in colorectal cancer and how to avoid them

Antoni Castells, Francesc Balaguer

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Abstract

Colorectal cancer (CRC) is a common and deadly disease. Advances in understanding the disease have improved diagnosis, prevention, and treatment. Genetic factors play a role in some cases of CRC, and identifying hereditary disorders has helped reduce morbidity and mortality. Serrated polyps are also precursors of CRC, and colonoscopy is crucial for screening and prevention. However, colonoscopy is not perfect, and some lesions may be missed. Here we discuss common mistakes in CRC diagnosis, prevention, and treatment, and how to avoid them.

Topics

Digestive Oncology

Citation

Balaguer F and Castells A. Mistakes in colorectal cancer and how to avoid them. UEG Education 2016: 16: 7–10.

Published

2025

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UEG Mistakes In Articles

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Mistakes in gastrostomy insertion and how to avoid them

Tom Welbank

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Abstract

Long-term enteral nutrition via gastrostomy is a relatively common medical intervention for patients at risk of malnutrition who have an accessible and functioning gastrointestinal tract. There are clear clinical guidelines describing the principles of practice as well as numerous retrospective and non-randomised controlled studies and case series. However, fewer publications impart advice and guidance regarding the management and ‘patient selection’ for these interventions. The following article provides a combination of the author’s views and the evidence base.

Topics

Small Intestine & Nutrition Stomach & H. Pylori

Citation

Welbank T, Mistakes in gastrostomy insertion ingestion and how to avoid them. UEG Education 2024; 24: 8-11.

Published

2024

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