Diagnosing Crohn's Disease in Presumed Cryptoglandular Perianal Fistulas: An Expert Delphi Consensus on Early Identification of Patients at Risk of Crohn's Disease in Perianal Fistulas (PREFAB).

Background: The aim of this Delphi study was to reach consensus on a new clinical decision tool to help identify or exclude Crohn's disease (CD) in patients with perianal fistula(s) (PAF).

Methods: A panel of international experts in the field of proctology/Inflammatory Bowel Disease (IBD) were invited to participate. In the first round (electronic survey), participants were asked to anonymously provide their opinion probing 1) the relevance and use of clinical characteristics suggestive of underlying CD, 2) the use of faecal calprotectin (FCP) for screening for CD and 3) on the diagnostic work-up for CD in PAF patients with raised clinical suspicion.

Management of Perianal Fistulizing Crohn's Disease According to Principles of Wound Repair.

Background: Perianal fistulizing Crohn's disease (PFCD) is a challenging and debilitating phenotype of Crohn's disease that can negatively affect quality of life. Studies have begun to uncover the physiologic mechanisms involved in wound repair as it relates to PFCD and how aberrations in these mechanisms may contribute to fistula persistence.

Aims: To review the physiologic and pathophysiologic mechanisms of wound repair in PFCD and how specific therapeutic strategies may impact their outcomes.

Consensus definition of a radiologically healed fistula on magnetic resonance imaging in perianal Crohn's disease: an international Delphi study.

Introduction: Perianal fistulising Crohn's disease (pfCD) is a distinct and debilitating phenotype seen in around one-third of patients with CD. Clinical trials in pfCD are increasingly using magnetic resonance imaging (MRI) criteria as a primary endpoint, but there is heterogeneity in the radiological definition of a healed perianal fistula that currently limits our ability to perform meaningful meta-analyses of studies. Our aim is to standardise outcomes through the generation of an international consensus definition of a radiologically healed fistula.

TOpClass Class 4 Perineal Crohn's Disease: A Systematic Review and Meta-analysis of Perineal Wound Complication After Proctectomy in Crohn's Patients.

Background: Nonhealing perineal wounds have been reported to be common after proctectomy for Crohn's disease (CD). We performed a systematic review and meta-analysis of perineal wound healing after proctectomy for CD and assessed the risk factors for nonhealing.

Methods: A comprehensive literature search was conducted in PubMed, Embase, and Scopus databases from 2010 to 2023, and articles reporting perineal wound healing rates after proctectomy for CD were included.

Perianal Fistulizing Crohn's Disease: Utilizing the TOpClass Classification in Clinical Practice to Provide Targeted Individualized Care.

Background & Aims: Perianal fistulation is a challenging phenotype of Crohn's disease, with significant impact on quality of life. Historically, fistulae have been classified anatomically in relation to the sphincter complex, and management guidelines have been generalized, with lack of attention to the clinical heterogenicity seen. The recent 'TOpClass classification system' for perianal fistulizing Crohn's disease (PFCD) addresses this issue, and classifies patients into defined groups, which provide a focus for fistula management that aligns with disease characteristics and patient goals.

Perianal Fistulizing Crohn's Disease-Associated Anorectal and Fistula Cancers: Systematic Review and Expert Consensus.

Background & Aims: Perianal fistulizing Crohn's disease (PFCD)-associated anorectal and fistula cancers are rare but often devastating diagnoses. However, given the low incidence and consequent lack of data and clinical trials in the field, there is little to no guidance on screening and management of these cancers. To inform clinical practice, we developed consensus guidelines on PFCD-associated anorectal and fistula cancers by multidisciplinary experts from the international TOpClass consortium.

Creation of an institutional preoperative checklist to support clinical risk assessment in patients with ulcerative colitis (UC) considering ileoanal pouch surgery.

Background: Total proctocolectomy with ileal pouch-anal anastomosis (IPAA) is the most established restorative operative approach for patients with ulcerative colitis. It has associated morbidity and the potential for major repercussions on quality of life. As such, patient selection is crucial to its success.

The development of a cryptoglandular anal fistula quality of life scale (AF-QoL).

Aim: Quality of life (QoL) is a crucial and core outcome in assessing the effectiveness of treatments for cryptoglandular anal fistula. Despite its extensive impact, there is a lack of patient-centred, disease-specific QoL measurement instruments of adequate quality. The aim of this study is to develop a disease-specific measurement instrument that can accurately measure QoL for patients with cryptoglandular anal fistula.

Exploring methods of improving patient understanding and communication in a complex anal fistula clinic: results from a randomized controlled feasibility study.

Aim: Patient understanding of disease can guide decision-making in the management of anal fistula. This prospective feasibility study aimed to assess the acceptability and methods of assessing the impact of viewing realistic models on patients with anal fistula.

Methods: New referrals to a tertiary clinic participated in this single-centre, parallel-group randomized controlled study.

European Society of Coloproctology: Guidelines for diagnosis and treatment of cryptoglandular anal fistula.

Aim: The primary aim of the European Society of Coloproctology (ESCP) Guideline Development Group (GDG) was to produce high-quality, evidence-based guidelines for the management of cryptoglandular anal fistula with input from a multidisciplinary group and using transparent, reproducible methodology.

Methods: Previously published methodology in guideline development by the ESCP has been replicated in this project. The guideline development process followed the requirements of the AGREE-S tool kit.

Where Are We and Where to Next?-The Future of Perianal Crohn's Disease Management.

Perianal fistulizing Crohn's Disease (pCD) affects about 25% of patients with Crohn's Disease (CD). It remains a difficult entity to manage with a therapeutic ceiling of treatment success despite improving medical and surgical management. The refractory nature of the disease calls for an imminent need to better understand its immunopathogenesis and classification to better streamline our treatment options.

Cleft closure (the Bascom cleft lift) for 714 patients-treatment of choice for complex and recurrent pilonidal disease (a cohort study).

Aim: Pilonidal disease is a benign condition that affects mainly the young. In existing literature, there is no consensus for best treatment, with multiple operative techniques described, some complex, resulting in a high proportion of failure and/or morbidity. The cleft closure (or cleft lift) described by Bascom and Bascom (Arch Surg, 137, 2002, 1146-50), by comparison, is a simple operation, resulting in healing in the majority and good cosmesis.

SupportiNg operAtive Photographic documentation in ileocolonic CROHN's disease surgery: The SNAPCROHN study.

Background: There are reported variations in the intraoperative management of Crohn's disease. This consensus statement aimed to develop a standardised protocol for photographic documentation of intraoperative findings and critical procedural steps in ileocolonic Crohn's disease surgery.

Methods: Colorectal surgeons with a specialist interest in minimally invasive surgery and inflammatory bowel disease were invited as committee members to develop a survey on the use of photo-documentation in Crohn's disease surgery.

Do Patient-Reported Quality-of-Life (QoL) Scales Provide an Adequate Assessment of Patients with Cryptoglandular Anal Fistulae? A Systematic Review of Measurement Instruments and Their Content Validity.

Background: Cryptoglandular anal fistulae can significantly affect patient quality of life (QoL), making it essential to ensure that any study of fistula treatment assesses the impact on QoL. The aim of this systematic review was to evaluate the content validity of Patient-Reported Outcome Measures (PROMs) that assess QoL in patients with a fistula.

Methods: MEDLINE, EMBASE, PsycINFO, and Scopus were searched and studies assessing the content validity of patient-reported QoL measurement instruments, or PROM development studies in patients with cryptoglandular anal fistulae, were included.

The development of a minimum dataset for MRI reporting of anorectal fistula: a multi-disciplinary, expert consensus process.

There are a range of sphincter-preserving procedures available to treat anorectal fistula, some of which can be precluded, or rendered more optimal by specific features of fistula anatomy. Magnetic resonance imaging (MRI) is the gold standard modality for assessing anorectal fistula. To maximise clinical utility, the MRI report should accurately describe these clinically relevant features.

Classifying perianal fistulising Crohn's disease: an expert consensus to guide decision-making in daily practice and clinical trials.

Perianal fistulising Crohn's disease is an aggressive disease phenotype that can have a substantial detrimental impact on patients' quality of life. Current biological understanding of perianal fistulising Crohn's disease remains inadequate and previous classification systems have not provided clear guidance on therapy in clinical practice nor on defining patient cohorts within clinical trials. We propose a new classification system for perianal fistulising Crohn's disease that was developed through a modified nominal group technique expert consensus process.

Living with cryptoglandular anal fistula: a qualitative investigation of the patient's experience through semi-structured patient interviews.

Purpose: Cryptoglandular anal fistula continues to be a subject of extensive surgical research due to the lack of effective and enduring treatments, some of which incur risks to continence and quality of life. However, the patient experience of disease has seldom been reported. The aims of this study are to understand the impact of living with a fistula and the treatment outcomes that are valued by patients.

Anterior Resection Syndrome and Quality of Life With Long-term Follow-up After Rectal Cancer Resection.

Background: Surgical and systemic therapies continue to advance, enabling restorative resections for distal rectal cancer. These operations are associated with low anterior resection syndrome. Recent studies with methodological and size limitations have investigated the incidence of low anterior resection syndrome after anterior resection.