A case of umbilical cord pseudocyst in the first pregnancy in a 30-year old female patient. In this study the authors presents the course of pregnancy, ultrasound description, parturition and the evaluation of the newborn after birth. Using the available literature ultrasound compared with the documentation and the prognosis for the fetus. Preparing a case searched Medline for analysis of previous studies and descriptions of the umbilical cord cyst in the second trimester of pregnancy. Due to the correlation with aneuploidy and lethal defects, it was found that the visibility of cystic masses within the umbilical cord, regardless of the gestation period should be an indication for the intensive monitoring of fetal ultrasound and referral center for testing fetal karyotype.