The authors report a series of three cases of Youssef syndrome observed over a 10 year period. All the fistulas were secondary to cesarian section. The diagnosis was established on clinical findings in one case. The intraveinous urography was performed in all the cases and visualised the uterine cavity in one case. In the remaining cases the diagnosis was established by the retrograd cystography. The treatment was surgical for two patients and the third one refused any treatment. With a mean recoil of fifteen months the results judged on the disappearance of the clinic signs were good in the two patients opered. The objective of this study is to analyse the aetiological, diagnosis and therapeutic aspects of this pathology.