Diverting colostomy is commonly required in surgical emergencies of the distal colon, especially if the patient is in poor condition. This paper shows that the colostomy could be unnecessary in most cases. In the last 10 years, 6 patients (4 with high-risk or postoperative complicated Hirschsprung disease, 1 with intestinal neuronal dysplasia and 1 with iatrogenic rectal stenosis obstruction) have been submitted to primary continent perineal colostomy-modified Duhamel's procedure. The modified technique consists of the exteriorization of the normal colon or ileum by a retrorectal and trans-anal way, while the excision of redundant tissue and rectal spur section are postponed at least for 10 days. In personal experience this peculiar surgical approach allows to avoid not only the complications due to the fashioning of a contraindicated primary anastomosis, but even those due to stomy performance and its closure, promoting good anatomo-functional results in all patients. The advantages of modified Duhamel's operation compared to other procedures (Swenson-Pellerin or Soave pull-through) depend on the rapidity of execution and on the quality of short and long term outcome.