Extramucosal pyloromyotomy is a method with predictable morbidity and outcome for the cure of infantile hypertrophic pyloric stenosis. The method created by Ramstedt is successfully performed using a laparoscopic approach. Preliminary reports, including 266 cases treated by laparoscopic pyloromyotomy (LP), suggest that morbidity is comparable to that of open approaches. Advantages of LP include superior cosmetic result and no reported wound infections to date. For the experienced laparoscopic surgeon, LP is an precise and efficient technique, and the preferred method for the management of infantile hypertrophic pyloric stenosis.