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Background and Aims: The aim of the present study was to assess prevalence and disease outcomes of arthritis in a nationwide cohort of pediatric patients with inflammatory bowel disease (IBD)., Methods: We collected data of pediatric IBD patients experiencing arthritis from the Italian Society of Pediatric Gastroenterology, Hepatology and Nutrition IBD registry. We gathered baseline and one-year follow-up data on concomitant IBD and arthritis diagnosis., Results: 150 patients [(99 Crohn's Disease (CD), 51 Ulcerative Colitis (UC) and Unclassified IBD (IBDU)] with arthritis out of 3061 (1301 CD and 1760 UC) patients were identified, with an overall prevalence of 4.9 %. Arthritis was more frequent in CD than in UC (7.6 % vs 2.9 %, p < 0.01). Peripheral arthritis was more frequently diagnosed in patients with active IBD than in those with quiescent disease (94.6 % vs 67.3 %, p < 0.01). At one-year follow-up, clinically active IBD was independently associated with lower peripheral arthritis remission rates, whereas it did not impact axial arthritis remission. The presence of additional EIMs was associated with lower IBD clinical remission rates., Discussion: Clinically active IBD impacts peripheral arthritis but not axial one, whose activity appeared to be independent by intestinal disease. The presence of additional EIMs has a negative prognostic impact on IBD course., Competing Interests: Conflict of interest The authors have no conflict of interest to declare., (Copyright © 2024 Editrice Gastroenterologica Italiana S.r.l. Published by Elsevier Ltd. All rights reserved.)

Anemia is one of the most frequent extra-intestinal manifestations of inflammatory bowel disease. Insidious onset, variability of symptoms and lack of standardized screening practices may increase the risk of underestimating its burden in children with IBD. Despite its relevance and peculiarity in everyday clinical practice, this topic is only dealt with in a few documents specifically for the pediatric field. The aim of the current guidelines is therefore to provide pediatric gastroenterologists with a practical update to support the clinical and therapeutic management of children with IBD and anemia. A panel of 19 pediatric gastroenterologists and 1 pediatric hematologist with experience in the field of pediatric IBD was agreed by IBD Working group of the Italian Society of Gastroenterology, Hepatology and Nutrition (SIGENP) to produce the present article outlining practical clinical approaches to the pediatric patient with IBD and anemia. The levels of evidence and recommendations have been defined for each part of the statement according to the GRADE system., Competing Interests: Declaration of competing interest The authors have no conflict of interests to declare with regards to this manuscript., (Copyright © 2024 Editrice Gastroenterologica Italiana S.r.l. Published by Elsevier Ltd. All rights reserved.)

Background: Transition is a crucial process in the care of IBD patients, although it remains largely heterogeneous., Aims: To provide an overview of the transition process in Italy and to investigate the perspective of the paediatric and adult physicians., Methods: An online survey was developed by the Italian Group for Inflammatory Bowel Diseases (IG-IBD) and the Italian Society of Paediatric Gastroenterology, Hepatology and Nutrition (SIGENP)., Results: 104 physicians (62 paediatric and 42 adult gastroenterologists) participated to the survey. The disease status was ranked with the highest priority among the key elements of the transition process. The age of the patient was perceived with a higher priority by paediatric gastroenterologists than by adult ones (p < 0.01). In most cases, the transition was organized through one or more joint meetings. Only less than 25 % of responders reported to involve other professions during transition. The struggle in leaving paediatric setting was perceived as the main obstacle to an effective transition process. Paediatric IBD gastroenterologists ranked the struggle in leaving the paediatric setting and the attending physician as higher critical point than adult gastroenterologists., Conclusions: The current survey provided a snapshot of the IBD transition process in Italy. The present findings highlight the need to embed transitional care in healthcare policy., Competing Interests: Conflict of interest None., (Copyright © 2023. Published by Elsevier Ltd.)

Background: The natural history of ulcerative proctitis (UP) has been poorly investigated in children., Aims: We aimed to compare the disease course of children with UP at diagnosis to the other locations and to identify extension predictors., Methods: This was a multicenter, observational study carried out from data prospectively entered in the SIGENP-IBD-Registry. Children with ulcerative colitis (UC) diagnosis and at least 1-year follow-up were included. On the basis of Paris classification UP patients were identified and compared with the other locations., Results: 872 children were enrolled (median age at diagnosis: 11.2 years; M/F: 426/446), of whom 78 (9%) with UP. Kaplan-Meier analysis demonstrated increased cumulative probabilities of disease extension in the E1 group [1 year: 20.3%; 5 years: 52.7%; 10 years: 72.4%] compared to E3 group [1 year: 8.5%; 5 years: 24.9% and 10 years: 60.1%, p=0.001]. No differences were observed comparing E1 and E2 groups [p=0.4]. Cumulative probabilities of surgery at 1, 5 and 10 years were 1.3, 2.8 and 2.8% in the E1 group and 2.5, 8 and 12.8% in the E2-E3-E4 group, respectively (p=0.1). Cox regression analysis demonstrated that PUCAI>35 at diagnosis was associated with endoscopic extension (HR=4.9; CI 95% 1.5-15.2, p=0.006)., Conclusions: UP is associated with similar short and long-term outcomes compared to other locations., Competing Interests: Conflict of interest The authors have no conflict of interests to declare with regards to this manuscript., (Copyright © 2023 Editrice Gastroenterologica Italiana S.r.l. Published by Elsevier Ltd. All rights reserved.)

Introduction: The present study aimed at evaluating Italian epidemiological trends of pediatric inflammatory bowel diseases (IBD) over the period 2009-2018., Materials and Methods: Data from 1969 patients enrolled in the Italian Society of Pediatric Gastroenterology, Hepatology and Nutrition Registry, by 49 pediatric IBD centers throughout the country, were analyzed, comparing three different time intervals (2009-2012, 2013-2015, 2016-2018)., Results: The number of new IBD diagnoses ranged from 175 to 219 per year, evenly distributed over the examined period of time. From 2009 to 2018, the minimal incidence ranged from 1.59 to 2.04 /10 5 inhabitants aged < 18 years, with an overall slight predominance of ulcerative colitis (UC) over Crohn's disease (CD) (ratio: 1.1). Mean diagnostic delay was 6.8 months for CD and 4.1 months for UC, with a significant reduction for CD when comparing the three-time intervals (p =0.008). The most frequent disease locations according to the Paris classification were ileocolonic for CD (41.3%) and pancolitis for UC (54.6%)., Conclusions: The minimal incidence rate in Italy seems to have stabilized over the last two decades, even if it has increased when compared to previous reports. UC is still slightly more prevalent than CD in our country. Diagnostic delay significantly decreased for CD, reflecting an improved diagnostic capacity., Competing Interests: Conflict of Interest The authors, FL, LS, PG, DK, MB, GZ, SO, MRP, MTI(,) EM, FG, CR, DB, GDA, SA, FB, SR, AA have none to declare. PA has received a conference fees from Danone and from Bioproject MA has received a consultation fee, research grant, royalties or honorarium from Abbvie. PL has received conference fees from Abbvie, Pfizer, Sandoz, Nestlè-Nutricia and Janssen. All authors declare no financial relationships with a commercial entity producing health-related products and or services related to this article. No honorarium, grant, or other form of payment was given to anyone to write and to produce the manuscript, (Copyright © 2022. Published by Elsevier Ltd.)

Introduction: Few data are available regarding the trend of IgA anti-transglutaminase antibodies (TGA-IgA) in children with celiac disease (CD) on a gluten-free diet (GFD). Our aim is to examine the normalization time of CD serology in a large pediatric population, and its predictors., Material and Methods: We retrospectively evaluated the normalization time of TGA-IgA and its predictive factors (age, sex, ethnicity, symptoms, associated diabetes/thyroiditis, Marsh stage, TGA-IgA and endomysial antibody levels at diagnosis, diet adherence), in 1024 children diagnosed from 2000 to 2019 in three pediatric Italian centers, on a GFD., Results: TGA-IgA remission was reached in 67,3%, 80,7%, 89,8% and 94,9% after 12, 18, 24 and 36 months from starting a GFD, respectively (median time = 9 months). TGA-IgA >10´upper limit of normal at diagnosis (HR = 0.56), age 7-12 years old (HR = 0.83), poor compliance to diet (HR = 0.69), female sex (HR = 0.82), non-Caucasian ethnicity (HR = 0.75), and comorbidities (HR = 0.72) were independent factors significantly associated with longer time to normalization., Conclusions: Our population is the largest in the literature, with the majority of patients normalizing CD serology within 24 months from starting a GFD. We suggest a special attention to patients with comorbidities, language barriers or age 7-12 years for a proper management and follow-up., (Copyright © 2021 Editrice Gastroenterologica Italiana S.r.l. Published by Elsevier Ltd. All rights reserved.)

Background: IBD management has been significantly affected during the COVID-19 lockdown with potential clinical issues., Aims: The aim of this study was to analyse the impact of COVID-19 pandemic on the Italian paediatric IBD cohort., Methods: This was a multicentre, retrospective, cohort investigation including 21 different Italian IBD referral centres. An electronic data collection was performed among the participating centres including: clinical characteristics of IBD patients, number of COVID-19 cases and clinical outcomes, disease management during the lockdown and the previous 9 weeks., Results: 2291 children affected by IBD were enrolled. We experienced a significant reduction of the hospital admissions [604/2291 (26.3%) vs 1281/2291 (55.9%); p < 0.001]. More specifically, we observed a reduction of hospitalizations for new diagnosis (from n = 44 to n = 27) and endoscopic re-evaluations (from n = 46 to n = 8). Hospitalization for relapses and surgical procedures remained substantially unchanged. Biologic infusions did not significantly vary [393/2291 (17.1%) vs 368/2291 (16%); p = 0.3]. Telemedicine services for children with IBD were activated in 52.3% of the centres. In 42/2291(1.8%) children immunosuppressive therapies were adapted due to the concurrent COVID-19 pandemic., Conclusion: Due to the several limitations of the lockdown, cares for children with IBD have been kept to minimal standards, giving priorities to the urgencies and to biologics' infusions and implementing telemedicine services., Competing Interests: Declaration of Competing Interest The authors have no conflict of interests to declare with regards to this manuscript., (Copyright © 2020 Editrice Gastroenterologica Italiana S.r.l. Published by Elsevier Ltd. All rights reserved.)

Coronavirus Disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2, spreading in Italy during the first months of 2020, abruptly changed the way of practicing medicine in this country. As a consequence of the lockdown, the diagnostic and therapeutic management of paediatric chronic conditions, such as inflammatory bowel disease (IBD) has been affected. During the peak of COVID-19 pandemic, elective visits, endoscopies and infusions have been postponed, with potential clinical and psychological impact on disease course and a high likelihood of increasing waiting lists. While slowly moving back towards normality, clinicians need to recognize the best ways to care for patients with IBD, carefully avoiding risk factors for new potential epidemic outbreaks. In this uncertain scenario until the development and spread of COVID-19 vaccine, it is necessary to continue to operate with caution. Hereby we provide useful indications for a safer and gradual restarting of routine clinical activities after COVID-19 peak in Italy., Competing Interests: Declaration of Competing Interest The authors have no conflict of interest to declare., (Copyright © 2020 Editrice Gastroenterologica Italiana S.r.l. Published by Elsevier Ltd. All rights reserved.)

Background: Data on the epidemiology and risk factors for pouchitis following restorative proctocolectomy and ileal pouch-anal anastomosis (IPAA) in pediatric patients with ulcerative colitis (UC) are scarce., Aims: To determine incidence, risk factors and clinical outcome of pouchitis following IPAA in children., Methods: This multicenter, retrospective cohort study, included all pediatric UC patients who underwent colectomy and IPAA from January 2010 to December 2016., Results: Eighty-five patients were enrolled. During a median post-surgical period of 24.8 (range: 1.0-72.0) months following IPAA, 38 (44.7%) patients developed pouchitis, including 6 (15.8%) who developed chronic pouchitis. Kaplan-Meier survival estimates of the cumulative probability for pouchitis were 14.6% at 1 year and 27.3% and 51.5% at 2 and 5 years, respectively. Multiple Cox regression model showed that older age at colectomy (hazard ratio, HR: 0.89, p = 0.008) was a protective factor, whereas chronic active colitis as indication for surgery (HR: 4.45, p < 0.001), and a 3-stage IPAA (HR: 2.86, p = 0.028) increased the risk for pouchitis., Conclusions: Long-term risk for pouchitis is significantly high in pediatric-onset UC after IPAA. Younger age at colectomy, chronic active colitis as indication for surgery and 3-stage IPAA may increase the risk for pouchitis., (Copyright © 2019 Editrice Gastroenterologica Italiana S.r.l. Published by Elsevier Ltd. All rights reserved.)

Background: Few case reports describe the clinical features of pancreatic involvement in inflammatory bowel disease., Aim: To investigate prevalence and disease course of inflammatory bowel disease children with pancreatitis and with exclusive hyperamylasemia and hyperlipasemia., Methods: We used a web-registry to retrospectively identify paediatric inflammatory bowel disease patients with hyperamylasemia and hyperlipasemia. Participants were re-evaluated at 6 months and 1 year., Results: From a total of 649 paediatric patients, we found 27 with hyperamylasemia and hyperlipasemia (4.1%). Eleven patients (1.6%) fulfilled diagnostic criteria for acute pancreatitis. Female gender was significantly associated with acute pancreatitis (p=0.04). Twenty-five children (92.5%) had colonic disease. At 6 months 1/11 children with acute pancreatitis (9%) showed acute recurrent pancreatitis, while 1 patient (9%) had persistent hyperamylasemia and hyperlipasemia. At 12 months, 1 patient showed chronic pancreatitis (9.1%). Of the 16 children with exclusive hyperamylasemia and hyperlipasemia, 4 developed acute pancreatitis (25%), while 1 patient (6.2%) still presented exclusive hyperamylasemia and hyperlipasemia at 6 months. At 12 months, 11/16 patients (68.7%) reached a remission of pancreatic involvement, whereas 5 remaining patients (32.3%) had persistent hyperamylasemia and hyperlipasemia., Conclusions: In inflammatory bowel disease children, acute pancreatitis is more common in colonic disease and in female gender. Pancreatic function should be monitored, considering that pancreatic damage may evolve., (Copyright © 2015 Editrice Gastroenterologica Italiana S.r.l. Published by Elsevier Ltd. All rights reserved.)