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Intussusception: US findings with pathologic correlation--the crescent-in-doughnut sign
G del-Pozo1, J C Albillos, D Tejedor
1Department of Radiology, Hospital Universitario Infantil 12 de Octubre, Madrid, Spain.
Radiology
|June 1, 1996
Summary
The "crescent-in-doughnut sign" on ultrasound is a key indicator for diagnosing intussusception. This characteristic finding helps identify the condition in pediatric patients.
Area of Science:
- Pediatric Radiology
- Gastrointestinal Imaging
Background:
- Intussusception is a common surgical emergency in infants and children.
- Accurate ultrasound (US) diagnosis is crucial for timely intervention.
Purpose of the Study:
- To identify characteristic ultrasound findings of intussusception.
- To elucidate the sonographic components of intussusception.
Main Methods:
- Surgical induction of intussusception in pigs with in vitro US-pathology correlation.
- Analysis of US findings in 44 pediatric intussusception cases.
Main Results:
- Axial US images revealed a characteristic doughnut pattern.
- A hyperechoic crescent within the doughnut, termed the "crescent-in-doughnut sign", was consistently observed.
- The central echogenicity varied based on the scan level, with hyperechoic crescent at the base and hypoechoic center at the apex.
Conclusions:
- The "crescent-in-doughnut sign" is a distinctive ultrasound feature of intussusception.
- This sign aids in the diagnosis and understanding of intussusception anatomy on ultrasound.