Granulomatous Appendicitis in the Pediatric Population

Area of Science:

• Pediatric pathology
• Gastrointestinal surgery
• Histopathology

Background:

• The clinical significance of granulomatous appendicitis (GA) in children is not well understood.
• Pediatric GA is a rare condition requiring further investigation into its causes and implications.

Purpose of the Study:

• To investigate the etiology and histopathology of pediatric granulomatous appendicitis.
• To determine the association between GA and other gastrointestinal conditions like Crohn's disease.
• To evaluate the diagnostic yield of special stains in pediatric GA cases.

Main Methods:

• Retrospective review of pediatric patients diagnosed with GA at two major pediatric institutions.
• Analysis of etiological factors and histopathological findings in appendectomy specimens.
• Review of clinical data, including follow-up for inflammatory bowel disease and the use of special stains.

Main Results:

• Forty-three cases of pediatric GA were identified (0.4% of appendectomies), with a median age of 12.1 years.
• Interval appendectomy was the most common scenario (51% perforated appendicitis managed medically prior to surgery).
• GA was rarely associated with Crohn's disease (1 of 21 non-interval appendectomies) and special stains showed low diagnostic utility.

Conclusions:

• Granulomatous appendicitis is a rare finding in pediatric patients, most frequently associated with interval appendectomies.
• The association of pediatric GA with Crohn's disease is infrequent, and serosal granulomas are more common in interval appendectomies.
• Special stains for microorganisms in pediatric GA have limited diagnostic value and minimal impact on clinical management.