Hypertrophic Pyloric Stenosis and Other Pyloric Affections

  • Mirko Bertozzi
  • Elisa Magrini
  • Antonino Appignani


Infantile hypertrophic pyloric stenosis (IHPS) is a common surgical cause of gastric outlet obstruction among infants, characterized by elongation and narrowing of pyloric canal due to hypertrophy of pyloric muscle. IHPS is characterized by a progressive gastric outlet obstruction causing non-bilious projectile vomiting. Although the etiology is unclear, the pyloric muscle thickens abnormally in time and causes the obstruction of gastric outlet. Depending on the duration of symptoms, dehydration and hypokalemic hypochloremic metabolic alkalosis may occur. Physical examination and whether necessary ultrasonography may be enough for diagnosis of IHPS, and its standardized operative intervention is pyloromyotomy. In this chapter, other pyloric affections were also described.


Infantile hypertrophic pyloric stenosis Pyloric atresia Prepyloric antral diaphragm 


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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • Mirko Bertozzi
    • 1
  • Elisa Magrini
    • 1
  • Antonino Appignani
    • 1
  1. 1.S.C. di Clinica Chirurgica Pediatrica, S. Maria della Misericordia HospitalUniversity of PerugiaPerugiaItaly

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