A modified technique of laparoscopic pyloromyotomy was used to treat i
nfantile hypertrophic pyloric stenosis. Introducing a 5-mm periumbilic
al port for visualization, two stab wounds are made on either side lat
erally to directly insert 2.7-mm instruments for manipulation. From th
e left, the stomach is grasped - not the duodenum! From the right, an
inexpensive disposable arthroscopy knife is used to incise the serosa
and begin the myotomy, which is completed with a laparoscopic spreader
until the muscle is separated sufficiently to relieve the obstruction
. Twenty-nine children treated with laparoscopic pyloromyotomy were co
mpared to 125 children treated with the conventional open Ramstedt pyl
oromyotomy. There were no statistically significant differences in the
presentation or results between groups, suggesting that the laparosco
pic technique is a safe and equal alternative.