Résumé
Retrorectal tumors [RRT] constitute a topographic entity grouping benign andmalignant tumors that are congenital for the majority, and developing in presacral retrorectal space. The multiplicity of the embryologic theories, the difficulty of their histological classification, as well as the diagnostic and therapeutic delays, will be illustrated by three new cases in the visceral surgery service of the Military Hospital of Instruction Mohammed V of Rabat. Their topographic diagnosis and extension rests on the abdomino-pelvic tomodensitometry and the imagery by magnetic resonance in order to determine the nature and especially the reports of the tumor. Their treatment rests on the surgical excision systematically. The forecast of these tumors depends of their histological nature and the quality of the surgical excision