EN
The rare anomalies diagnosed in prenatal ultrasonographic examination include Pierre-Robin sequence. The aim of the report was to demonstrate a well-documented case of Pierre-Robin sequence detected by ultrasonography at the 24th week of gestation, present the differentiation of Pierre-Robin sequence in the prenatal ultrasonography and to emphasize the importance of early sonographic diagnosis of the anomaly.The prenatal diagnosis of Pierre-Robin sequence in prenatal ultrasonographic assessment is of great importance as it permits planning further course of pregnancy as well as EXIT procedure and postnatal treatment.