Insights into coeliac disease diagnosis: a 2021-2023 overview of diagnostic approach and delays in children in Slovenia.

Introduction: Over the past decade, the European Society for Paediatric Gastroenterology, Hepatology and Nutrition (ESPGHAN) proposed the option of diagnosing coeliac disease (CD) in children without duodenal biopsy. The aim of our study was to assess the diagnostic approach in newly diagnosed children with CD in Slovenia.

Methods: In this prospective study, Slovenian paediatric gastroenterologists were invited to provide medical records of children under 19 years diagnosed with CD from March 2021 to October 2023. The analysis focused on tissue transglutaminase antibody (TGA) levels at diagnosis, diagnostic approach, adherence to ESPGHAN CD guidelines and diagnostic delays.

Results: Data from 160 newly diagnosed CD patients (61.9% female; median age 8 years; 16.9% asymptomatic) were available for the analysis. No-biopsy approach was used in 65% (N = 104) of children and the majority (N = 101) fulfilled all the criteria for the no-biopsy approach. Of 56 children diagnosed using duodenal biopsy, a further 10 (17.8%) would have also been eligible for the no-biopsy approach based on the very high levels of TGA. Median diagnostic delay from first symptoms to confirmation of diagnosis was 6 months (min 0 months, max 87 months). Use of the no-biopsy approach has risen significantly since 2016 (37.8% vs. 65.0%; p = 0.001) and diagnostic delays have shortened (6 vs. 7 months; p < 0.05).

Conclusion: This prospective study highlights the frequent use of a no-biopsy approach for diagnosing CD in children in Slovenia, showing large adherence to ESPGHAN guidelines. Also, diagnostic delays have shortened over recent years, likely due to various awareness-raising projects on CD conducted during this period.