What is the modality of choice for diagnosis of hypertrophic pyloric stenosis?
Ultrasonography
The patient is very well clinically. The child is normally feeding, with No complaint of vomiting. Normal weight gain (the patient weighs 7 Kg).
Ultrasonography reveals a decrease in thickness of the pyloric muscle (5 mm) as well as its length. Real-time images show adequate opening of the pyloric canal and normal passage of gastric content to the duodenum.