RT Book, Section A1 Graff, Danielle M. A1 Paul, Ronald I. A2 Tenenbein, Milton A2 Macias, Charles G. A2 Sharieff, Ghazala Q. A2 Yamamoto, Loren G. A2 Schafermeyer, Robert SR Print(0) ID 1155297463 T1 Pyloric Stenosis T2 Strange and Schafermeyer's Pediatric Emergency Medicine, 5e YR 2019 FD 2019 PB McGraw-Hill Education PP New York, NY SN 9781259860751 LK accesspediatrics.mhmedical.com/content.aspx?aid=1155297463 RD 2022/05/21 AB Pyloric stenosis presents most commonly between 5 to 6 weeks of age.Progressive non-bilious projectile vomiting is the most common presenting symptom.The typical electrolyte imbalance is hypochloremic metabolic alkalosis.Diagnosis is confirmed by ultrasound, and rarely by a fluoroscopic upper GI contrast study.Treatment is surgical pyloromyotomy.