At the Department of Paediatric surgery in Stockholm the choice of operative method for Hirschsprung's disease has since 1975 been endorectal pull-through. In 1985 some modifications were introduced, i.e. anal approach of the mucosal dissection, resection of the internal anal sphincter, total parenteral nutrition and fewer colostomies. Thirteen children treated accordingly have been compared to children treated before 1985. It was found that the children gained normal bowel habits earlier and had fewer postoperative problems than the children operated before introduction of the technical modifications.