Common fetal urinary tract abnormalities encompass a complex spectrum of abnormalities grouped under the name CAKUT, which can be detected antenatal by ultrasound with an incidence of 1 to 4 in 1,000 pregnancies. As such, they represent 15 to 20% of all birth defects. They remain responsible for 30 to 50% of cases of end-stage renal failure, so it is crucial to have an early diagnosis and medical or surgical management in order to minimize renal damage and to avoid or delay a possible renal failure. Through a study carried out within our structure comprising 36 cases, we will recall the most frequent fetal anomalies of the kidneys and urinary tract by specifying the ultrasound modalities and the prognosis of these various malformations as well as the recommendations for pre and postnatal management.