OverviewA narrowing of the outlet from the stomach to the small intestine (called the pylorus) that occurs in infants.
Update Date 8/22/2013
Updated by: Neil K. Kaneshiro, MD, MHA, Clinical Assistant Professor of Pediatrics, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Bethanne Black, and the A.D.A.M. Editorial team.