The limited scope and depth of existing literature on childhood eosinophilic gastrointestinal disorders (EGIDs) beyond eosinophilic esophagitis (EoE) spurred an international group of researchers and clinicians to develop the first clinical practice guidelines for diagnosing and treating these rare conditions.
They were developed jointly by the European Society for Paediatric Gastroenterology, Hepatology and Nutrition and the North American Society for Pediatric Gastroenterology, Hepatology and Nutrition.
Non-EoE EGIDs are rare chronic inflammatory disorders of the gastrointestinal tract, estimated at less than 200,000 cases annually in the United States, with unknown long-term consequences, Glenn Furuta, MD, professor of pediatrics at the University of Colorado at Denver and section head of gastroenterology at Children’s Hospital Colorado, both in Aurora, said in an interview
“There are many unmet needs. Research has been limited and has not progressed at the pace we want it to,” added Dr. Furuta, who is corresponding author of the guidelines.
The guidelines were published online in the Journal of Pediatric Gastroenterology & Nutrition, by lead author Alexandra Papadopoulou, MD, division of gastroenterology and hepatology, first department of pediatrics, University of Athens, and Children’s Hospital Agia Sofia, also in Athens, and colleagues.
With these, we provide guidance for clinicians to better understand the conditions and also how to diagnose and initiate care for patients with these rare diseases, said Dr. Furuta.
Difficult-to-diagnose conditions
Guideline development involved a working group of 26 pediatric gastroenterologists, adult gastroenterologists, allergists/immunologists, and pathologists from 16 countries across five continents. The consensus document includes 34 statements based on available evidence and 41 recommendations based on expert opinion and best clinical practices. In cases where the supporting evidence was weak but agreement was strong, the authors issued conditional recommendations.
The guidelines subdivide the non-EoE EGIDs according to inflammation location: eosinophilic gastritis, eosinophilic duodenitis (EoD), eosinophilic colitis, and eosinophilic enteritis. The latter can be further subdivided into EoD, eosinophilic jejunitis, and eosinophilic ileitis.
Non-EoE EGIDs are hard to diagnose because symptoms are relatively nonspecific and may include abdominal pain, vomiting, diarrhea, and bloody stools, all of which could have any number of underlying causes, Dr. Furuta said.
If you are treating a patient who is not getting better with such symptoms as persisting infections, acid-related problems, significant bleeding leading to anemia, intestinal perforation or obstruction, or low serum protein leading to swelling, then you should think that something else is going on that requires more of an evaluation, Dr. Furuta noted.
Patients with personal or family histories of eosinophilic or allergic disease should raise greater suspicion, Dr. Furuta said. “The next step requires an endoscopy and biopsy.”
Awareness of non-EoE EGIDs has been higher among pediatric gastroenterologists than among those treating adult disease because pediatric gastroenterologists have always obtained biopsies of the intestinal tract, Dr. Furuta noted.
The guidelines recommend that diagnosis of non-EoE EGIDs in children and adolescents must include signs or symptoms of gastrointestinal dysfunction, dense eosinophilic infiltrates found in mucosal or full-thickness biopsies above organ-specific threshold values included in the document, and absence of other diseases associated with GI mucosal eosinophilic inflammation.