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[Diagnostic imaging in hypertrophic pyloric stenosis]
M Sperandeo1, A Varriale, G Sperandeo
1Cattedra di Medicina Interna IV Divisione, Università degli Studi di Napoli, II Policlinico.
Insights
Hypertrophic pyloric stenosis (HPS) in infants presents with dehydration and vomiting. Real-time ultrasound, measuring pyloric muscle thickness, is a reliable initial diagnostic imaging method for HPS.
Area of Science:
- Pediatric Gastroenterology
- Diagnostic Imaging
- Infant Health
Background:
- Hypertrophic pyloric stenosis (HPS) is a common cause of vomiting in infants.
- Clinical signs include dehydration and vigorous gastric peristalsis.
- Physical examination may reveal a pathognomonic olive-shaped tumor.
Purpose of the Study:
- To review the diagnostic imaging approaches for hypertrophic pyloric stenosis (HPS) in infants.
- To discuss established sonographic criteria for HPS diagnosis.
- To evaluate the efficacy of real-time ultrasound as an initial imaging modality.
Main Methods:
- Review of previously published criteria for sonographic diagnosis of HPS.
- Discussion of key sonographic measurements: pyloric length, diameter, and muscle thickness.
- Emphasis on the diagnostic accuracy of pyloric muscle thickness.
Main Results:
- Sonographic criteria for HPS diagnosis are well-established.
- Pyloric muscle thickness is the most accurate and discriminating sonographic parameter.
- Real-time ultrasound demonstrates high reliability for HPS diagnosis.
Conclusions:
- Real-time ultrasound is a simple and reliable method for diagnosing HPS.
- Ultrasound should be the initial imaging procedure for suspected HPS in infants.
- Accurate diagnosis facilitates timely management of HPS.
Abstract:
This report discusses hypertrophic pyloric stenosis (HPS) and the current approach to diagnostic imaging in the vomiting infant. Signs and symptoms include dehydration and vigorous gastric peristalsis with vomitus. Palpation of an olive-shaped firm muscular tumor is pathognomonic of this condition. The radiographic signs of HPS are well known. Previously published criteria for the sonographic diagnosis of HPS are discussed, these include: measurements of pyloric length, diameter and muscle thickness. The thickened muscle is the most discriminated and accurate one. It was concluded that real-time ultrasound is a simple, and reliable method for the diagnosis of HPS and should be the initial imaging procedure.