Infantile Hypertrophic Pyloric Stenosis: A Case Report and Literature review

A 2-month-old male infant without relevant disease presented with a 7-week history of intermittent projectile nonbilius vomiting after bottle-feeding of formula. Other symptoms were non-specific. Although feeding was difficult, his body weight gain was good. Abdominal ultrasonography revealed pyloric hypertrophy; this led to a diagnosis of infantile hypertrophic pyloric stenosis (IHPS). He also had a family history of epilepsy, duodenal ulcer, and vesicoureteral reflux; however, the patient himself had none of these diseases and none of his family members had IHPS. Fredet– Ramstedt pyloromyotomy was performed; it resulted in symptom relief. His clinical presentations were mild and body weight gain was normal. There were no peristaltic waves, no obvious pyloric mass palpable without sedation, and no specific findings on a plain abdominal radiograph; this was not consistent with the findings of usual cases in the past.