RT Book, Section A1 Paul, Ronald I. A2 Schafermeyer, Robert A2 Tenenbein, Milton A2 Macias, Charles G. A2 Sharieff, Ghazala Q. A2 Yamamoto, Loren G. SR Print(0) ID 1105682667 T1 Pyloric Stenosis T2 Strange and Schafermeyer's Pediatric Emergency Medicine, 4e YR 2014 FD 2014 PB McGraw-Hill Education PP New York, NY SN 978-0-07-182926-7 LK accessemergencymedicine.mhmedical.com/content.aspx?aid=1105682667 RD 2024/04/25 AB Pyloric stenosis presents most commonly at 5 to 6 weeks of age.Progressive nonbilious 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.