ABSTRACT
Rectal duplications are very rare and pose sometimes diagnostic problems. We report 2 cases of rectal duplication among 32 alimentary tract duplications [6%] observed over 17 years period. The 2 patients were female and were hospitalized respectively at the age of 20 days and one month. In the first case the diagnosis was early in front of a mass prolapsed to the anus. In the second case, the diagnosis was posed at age the 6 months after iterative interventions for perished abscess and anal dents. The treatment consisted on a subtotal resection of the malformation in the first case and a lowering of the colon after iterative interventions for recidivant anal dents. Evolution was favorable in the two cases with a follow up of 4 and 10 year. Although it's rare, the diagnosis of rectal duplication must be evoked in front of any crowned pre sacral mass. Only an early diagnosis and treatment make it possible to prevent the complications and the later evolution towards the degeneration