Using ultrasonographic features in pediatric Crohn's disease activity index severity
Maryam Riahinezhad1, Fereshteh Sharifi Dorcheh1, Hosein Saneian2
1Department of Radiology, School of Medicine, Isfahan University of Medical Sciences Isfahan, Iran.
International Journal of Physiology, Pathophysiology and Pharmacology
|September 25, 2025
Summary
Ultrasound effectively monitors pediatric Crohn's disease (CD) activity. Key ultrasound features like intestinal wall echogenicity and ileal loop thickness significantly correlate with disease severity, offering a non-invasive follow-up tool.
Area of Science:
- Pediatric Gastroenterology
- Medical Imaging
- Inflammatory Bowel Disease Research
Background:
- Crohn's disease (CD) diagnosis and monitoring often involve invasive procedures with iatrogenic risks.
- Pediatric Crohn's Disease Activity Index (PCDAI) is a standard clinical assessment tool.
- Non-invasive imaging modalities are sought for improved pediatric CD management.
Purpose of the Study:
- To evaluate the frequency and significance of specific ultrasound features across different stages of pediatric Crohn's disease activity.
- To correlate ultrasound findings with the Pediatric Crohn's Disease Activity Index (PCDAI) scores.
- To establish ultrasound as a reliable tool for non-invasive CD monitoring in children.
Main Methods:
- Cross-sectional study of 22 pediatric patients diagnosed with Crohn's disease.
- Disease activity assessed using the Pediatric Crohn's Disease Activity Index (PCDAI), categorized into remission, mild, moderate, and severe.
- Ultrasound parameters analyzed included intestinal loop thickness, lymph node characteristics, mesenteric fat, vascularity, and lumen narrowing.
Main Results:
- Significant increases in intestinal wall echogenicity, mesenteric fat, vascularity, and lumen narrowing were observed as CD activity progressed from mild to severe (P < 0.05).
- Mean ileal loop thickness significantly increased with disease severity (P = 0.005), from 2.12 ± 0.58 in mild to 4.49 ± 1.43 in severe cases.
- Ascending colon loop thickness, lymph node metrics, spleen span, and SMA indices did not show statistically significant changes across PCDAI stages (P > 0.05).
Conclusions:
- Ultrasound is a convenient, reproducible, and non-invasive tool for assessing pediatric Crohn's disease activity.
- Progressive increases in intestinal wall echogenicity, mesenteric fat, vascularity, and lumen narrowing are significant ultrasound markers of worsening CD.
- Ileal loop thickness is a particularly sensitive indicator, significantly increasing in severe CD cases.
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