Esophagogastrography (Hypertrophic Pyloric Stenosis)

Due to progressive projectile vomiting an ultrasound was performed with findings within the normal range. Therefore, an esophagogastrography was performed in this 5-month-old boy. There is a dilated stomach with strong peristaltic waves, and only little contrast within the bulbus duodeni. Between the bulbus and the antrum there is a narrow and long pyloric channel with impression of the hypertrophic pyloric muscles on the antrum !£regu_20_p£!. Together with the abnormal dynamics of the gastric peristalsis and the delayed emptying of contrast these findings confirm the suspected diagnosis of a hypertrophic pyloric stenosis. This examination is indicated in doubtful ultrasound findings and if the diagnosis of hypertrophic pyloric stenosis is not excluded for clinical reasons, or if one of the other already mentioned differential diagnoses are suspected, including the rare pyloric or antral atresia or web. Depending on the suspected differential diagnosis, yet other additional examinations are necessary.