Evolving Concepts in Ultrasonography of Pediatric Intussusceptions: Unequivocal Differentiation of Ileocolic,...

Area of Science:

• Pediatric Radiology
• Gastrointestinal Imaging
• Medical Ultrasound

Background:

• Intussusception is a common surgical emergency in children.
• Accurate differentiation between types of intussusception is crucial for appropriate management.
• Ultrasonography is the primary diagnostic tool for suspected intussusception.

Purpose of the Study:

• To identify ultrasonographic parameters for distinguishing ileocolic intussusception from obstructive and transient small-bowel intussusceptions (SBI).
• To establish objective criteria for definitive diagnosis based on ultrasound findings.
• To improve diagnostic accuracy and guide clinical decision-making in pediatric intussusception.

Main Methods:

• Retrospective analysis of 90 children with suspected intussusception.
• Evaluation of ultrasonographic parameters including fat core diameter, lesion diameter, and wall thickness ratio.
• Statistical comparison of measurements between ileocolic, obstructive SBI, and transient SBI groups.

Main Results:

• Significant differences observed in mean fat core diameter (ileocolic vs. obstructive SBI vs. transient SBI: 1.45 vs. 0.37 vs. 0.29 cm).
• Mean lesion diameter differed significantly (ileocolic: 3.23 cm vs. SBI: 2.12 cm).
• Ratio of inner fat core to outer wall thickness (>1 for ileocolic, <1 for SBI) and segmental invagination (optimal threshold 2.5 cm) were key differentiators.

Conclusions:

• Ultrasonographic parameters, particularly fat core diameter and lesion size, reliably differentiate ileocolic intussusception from obstructive and transient SBI.
• These objective measurements enhance diagnostic certainty in pediatric intussusception.
• Ultrasound-based differentiation aids in selecting appropriate treatment strategies, potentially avoiding unnecessary interventions.