Purpose:We aim to assess the effectiveness of treating cesarean scar ectopic pregnancies by injecting alcohol into the gestational sac (GS) and performing dilatation curettage with or without prior systemic methotrexate (MTX) administration.Methods: A total of 37 patients were treated for cesarean scar pregnancy (CSP), 11 of which received systemic 75 mg MTX three days before local injection of 10% alcohol into the GS via 18G double lumen oocyte pick-up needle (Geotek, Ankara, Turkey) and 26 cases received local alcohol injection without prior MTX. Two or three days after the alcohol injection, the products of conception were removed again with a Karman cannula, and the β-hCG level was monitored weekly. After termination of CSP , the patients were followed up until they used contraception or delivered the following pregnancy.
Results:The MTX plus alcohol injection group and the alcohol injection alone group were compared. Significantly more women required Foley balloon tamponade 13 (50%), erythrocyte transfusion 13 (50%), and fresh frozen plasma infusion 9 (34.6%) in the local alcoholl injection alone group compared to the MTX plus alcohol group [n=1 (9.1%) p=0.01, n=1 (9.1%) p=0.01, n=0 p=0.02, respectively]. The mean resolution time of β-hCG was shorter in the MTX group [m=25±7.1 (18-48) and m=32.6±9.3 (22-58), p=0.01]; also; however, long hospitalization time was a disadvantage in this group. The recurrent CSP rate of 7.7% (n=2) was higher in the local alcohol injection alone group compared to nil in the MTX group. Cesarean niche surgery, abortion rate, and term pregnancy rates were similar in the two groups.
Conclusion:Although the efficacy of local alcohol injection alone is comparable to MTX plus alcohol injection, this group is at a disadvantage due to increased hemorrhage risk and the need for hemorrhage management. Local alcohol injection in combination with systemic MTX may be utilized as a good treatment option in patients.