Diagnostic Value of Sonography and Upper G I Barium Series in Hypertrophic Pyloric Stenosis

Abstract

It is a prospective study carried out in fifty infants referred to the department of Paediatric Radiology children Hospital and Institute of Child Health Lahore with clinical suspicion of hypertrophic pyloric stenosis (HPS). In this study we have analysed the diagnostic value of ultrasound and upper GI series ¡n a group of patients referred for suspected HPS. Abdominal ultrasound was performed as first step of imaging towards the diagnosis of pyloric stenosis and the upper GI series was carried out to compare the results with sonography. Abdominal sonography was performed with real time 5.0 MHz convex and 6.0 - 7.5 MHz transducer. Upper GI series was performed according to the standard technique. On sonography HPS was diagnosed in 54% (27) infants. In all these infants muscle thickness was found more than or equal to 4mm and length of pyloric canal was more than or equal to 16mm. While on barium examination of upper GI series only 50% (25) infants displayed radiological features of HPS. All the patients were already diagnosed on ultrasound for HPS. This study confirms usefulness and reliability of USG, as a tool in the diagnosis of HPS.