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Food-induced eosinophilic proctocolitis.

A M Lake1

  • 1Johns Hopkins University School of Medicine, Lutherville, Maryland 21093, USA.

Journal of Pediatric Gastroenterology and Nutrition
|January 14, 2000
PubMed
Summary
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Food-induced eosinophilic proctocolitis in infants presents with bloody stools but lacks systemic symptoms. Dietary protein elimination, via formula or maternal diet, resolves bleeding within days, offering an excellent long-term prognosis.

Area of Science:

  • Pediatric Gastroenterology
  • Immunology
  • Allergy

Background:

  • Food-induced eosinophilic proctocolitis is a condition affecting infants, typically within the first two months of life.
  • Characterized by blood-tinged stools, it often presents in exclusively breastfed infants, distinguishing it from other food-induced inflammatory bowel diseases.
  • Systemic symptoms like emesis, failure to thrive, anemia, and severe diarrhea are generally absent.

Purpose of the Study:

  • To describe the clinical presentation, diagnostic findings, and treatment outcomes of food-induced eosinophilic proctocolitis.
  • To highlight the diagnostic features on proctoscopy and rectal biopsy.
  • To evaluate the efficacy of dietary elimination strategies in managing this condition.

Main Methods:

  • Clinical observation of infants presenting with blood-tinged stools.

Related Experiment Videos

  • Proctoscopic examination of the rectosigmoid.
  • Rectal and lower sigmoid biopsies to assess eosinophilic infiltration.
  • Dietary intervention involving extensively hydrolyzed casein-based formula or maternal dietary protein elimination.

    • Main Results:

    • Proctoscopy revealed focal erythema, erosions, and/or nodularity of lymphoid nodular hyperplasia.
    • Rectal biopsies showed characteristic eosinophilic infiltration of the mucosa and lamina propria (typically >6-10 eosinophils/high-powered field).
    • Clinical resolution of bleeding occurred within 72-96 hours following dietary protein elimination.

    Conclusions:

    • Food-induced eosinophilic proctocolitis is a distinct entity characterized by rectal bleeding in young infants.
    • Diagnosis is supported by endoscopic and histological findings of eosinophilic infiltration.
    • Dietary management is highly effective, leading to rapid symptom resolution and an excellent long-term prognosis with tolerance of unrestricted diets by one year of age.