Abstract
Congenital hypertrophic pyloric stenosis with the principal complaint of explosive vomitting since several weeks from the birth is very often hardly curable by an internist. However, if diagnosis is given promptly, thoroughly prepared for operation, carefully operated by Ramstedt method, and if post-operative nutrition is well cared for under the cooperation by a pediatrician, operative treatment is believed to be safer and superior treatment compared with conservative treatment.
