State with progressive development of intestinal obstruction may leads to the misinterpretation of acute gastroenteritis in infant period. After passing of newborn period the differential diagnosis is not easy. Loss of time which leads to the correct diagnosis is ufavourable for patient because of worsening of the condition. The authors present a case review of 5 months old girl in whom cystoid intestinal duplication caused complete ileo-coecal occlusion. Associated diagnosis in our patient were anus perinealis ventralis and diverticulum Meckeli. The treatment of enteral duplication and Meckel’s diverticulum was done in one stage surgery.

        Key words: intestinal duplication – enteral duplication