Pathologist's approach to paediatric and neonatal eosinophilic gastrointestinal disorders

Area of Science:

• Gastroenterology
• Pediatric Pathology
• Histopathology

Background:

• Pediatric gastrointestinal disorders necessitate distinct clinical and pathological evaluations compared to adults.
• Limited research exists on normal eosinophil distribution in the pediatric gastrointestinal tract, challenging accurate diagnosis.
• Eosinophilic gastrointestinal disorders (EoGID) in children require careful differentiation from other causes of eosinophilia.

Purpose of the Study:

• To highlight the unique considerations for evaluating eosinophilia in pediatric gastrointestinal biopsies.
• To emphasize the importance of comprehensive histological assessment beyond mere eosinophil counts.
• To advocate for precise diagnostic terminology to prevent confusion in pediatric EoGID.

Main Methods:

• Review of histological features in pediatric gastrointestinal biopsies with eosinophilia.
• Analysis of eosinophil distribution, degranulation, and associated inflammatory markers.
• Comparison of diagnostic criteria for eosinophilic gastrointestinal disorders in pediatric populations.

Main Results:

• Eosinophil count alone is insufficient; distribution, degranulation, and other histological findings are critical aids.
• Histological features like cryptitis, crypt abscesses, and inflammatory cell infiltration provide diagnostic clues.
• Distinguishing primary EoGID from secondary eosinophilia requires ruling out other causes.

Conclusions:

• Accurate diagnosis of pediatric gastrointestinal eosinophilia relies on a holistic histopathological assessment.
• The term "with eosinophilic pattern" is preferred over "eosinophilic disorder" to avoid diagnostic ambiguity.
• Standardized reporting and further research are needed for pediatric EoGID.