Abstract
The overall incidence of hypertrophic pyloric stenosis is between 2 and 3 per 1000 live births. Classically, newborns only develop this pathology between 3 weeks and 3 months of life, with a predominance of males at a ratio of 5:1. The diagnosis is clinically evoked by a characteristic pattern of vomiting and progressive malnutrition. Medical imaging, particularly abdominal ultrasound, is used to make the diagnosis, and treatment is surgical.