Pyloric Stenosis
Most common surgical condition in newborn period (1/700)
males > females
some genetic influence
presents 3 wks-3 mos
non-bilious, projectile emesis, peristaltic
wave, “olive”, hypochoremic metabolic alkalosis
Diagnosis: US, UGI (string sign)
Rx: correction of alkalosis prior to surgery; pyloromyotomy