Congenital hypertrophic pyloric stenosis
Infant presented with non bilious vomiting.
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Abdominal ultrasound shows an elongated pyloric canal with increased pyloric muscle thickness. Redundant pyloric mucosa is seen projecting into the gastric antrum on longitudinal image (antral nipple).
Pyloric muscle thickness >3 mm on a transverse image and pyloric canal length >15 mm is compatible with congenital hypertrophic pyloric stenosis 1 which in our case measures 5.8 mm and 17.9 mm, respectively.