Implantation zone as an echographic criterion identification of types of cicatricial and isthmic pregnancies in women with a scar on the uterus

Objective: the purpose of this publication is to present the establishment of the implantation zone of the fetal egg during ultrasound diagnostics at 5-7 weeks to differentiate the types of cicatricial and isthmian pregnancies in women with a scar on the uterus after cesarean section. Materials and methods: the study included 11 women with low implantation of the fetal egg in the presence of a scar on the uterus. All underwent ultrasound with transabdominal and transvaginal approaches at 5–7 weeks of pregnancy to establish the place of implantation of the fetal egg relative to the scar on the uterus. Results: according to the results of ultrasound evaluation of the implantation zone of the fetal egg in 5–7 weeks were differentiated: type 1 of scar pregnancy (1 case); type 2 of scar pregnancy (7 cases) and low implantation along the posterior wall of the uterus at the level of the scar intact from it (2 cases). Conclusions: ultrasound at 5–7 weeks is a necessary method of examination in women with a scar on the uterus for the diagnosis of scar pregnancy. The establishment of the implantation zone of the fetal egg is a tool that allows differentiating the types of cicatricial and isthmic pregnancies.