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Pediatric chronic rhinosinusitis histopathology: differences and similarities with the adult form

Gilead Berger1, Tatiana Kogan, Miki Paker

  • 1Ear, Nose, and Throat Histopathological Research Laboratory, Meir Medical Center, Kfar Saba, Tel Aviv, Israel. berger45@netvision.net.il

Otolaryngology--Head and Neck Surgery : Official Journal of American Academy of Otolaryngology-Head and Neck Surgery
|April 16, 2011
PubMed

Insights

Pediatric chronic rhinosinusitis (CRS) shows distinct inflammatory pathways compared to adults, with less epithelial shedding and eosinophilia in children. Adult CRS presents with polypoid mucosa or glandular hyperplasia, and fibrosis is common in both groups.

Area of Science:

  • Otorhinolaryngology
  • Immunopathology
  • Pediatric Medicine

Background:

  • Chronic rhinosinusitis (CRS) is a complex inflammatory condition affecting the sinonasal mucosa.
  • Understanding age-specific differences in CRS pathophysiology is crucial for targeted treatment strategies.

Purpose of the Study:

  • To compare the histopathology and immunohistochemistry of pediatric and adult chronic rhinosinusitis.
  • To elucidate potential differences in inflammatory responses and disease mechanisms between pediatric and adult CRS.

Main Methods:

  • A cross-sectional study was conducted at a university-affiliated hospital.
  • Inflamed sinus-mucosal samples from 16 children with refractory CRS and 29 matched adults were analyzed.
  • Histopathology, immunohistochemistry, CT scores, epithelial integrity, and inflammatory cell populations (eosinophils, T-lymphocytes) were assessed.

Main Results:

  • Children exhibited lower CT scores and significantly less epithelial shedding compared to adults.
  • Pediatric CRS was characterized by lamina propria inflammation and fibrosis, with scanty eosinophils.
  • Adult CRS showed polypoid mucosa with eosinophilia (Type A) or glandular hyperplasia (Type B), with fibrosis noted in Type B patients.

Conclusions:

  • Significant differences in inflammatory responses suggest distinct pathophysiologic pathways for pediatric and adult CRS.
  • Reduced epithelial shedding in children may correlate with diminished tissue eosinophilia.
  • Extensive fibrosis was observed in a substantial proportion of adult Type B patients and in children.
Abstract

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