Endovascular treatment of cesarean scar pregnancy: a retrospective multicentric study.

Abstract

To assess the role of Uterine Artery Embolization (UAE) to treat cesarean scar pregnancy (CSP) using different embolic materials, focusing on its clinical and technical success rates; the association of UAE with methotrexate (MTX) and/or dilatation & curettage (D&C) was evaluated also. A retrospective analysis 33 patients (mean age 35years) affected by CSP and treated with UAE from March 2012 to 2020 was performed. Dynamic levels of serum β-HCG have been collected until they decreased to normal values after procedures. For the statistical analysis the sample was divided into 2 groups: UAE versus UAE + MTX. The gestational sac age ranged between 5 and 13weeks (mean 7weeks). According to operator's preference, 11 patients (33.33%) were treated with sponge injection, 2 patients (6.06%) with a combination of sponge and microsphere the remaining 20 patients (60.60%) with microspheres alone. No major complications occurred after UAE and D&C, neither side effects related to the MTX administration. Technical and clinical success rates were 97% and 85%, respectively. Mean percentage of β-HCG reduction was 90% (range - 99.92 to + 7.98%). Statistical analysis with linear regression shows a R2 value of 0.9624 in UAE group while a R2 value of 0.9440 in UAE + MTX group with statistical significance (p < 0.0001). No significative differences were found between the two groups about clinical success rate and embolic material adopted. In this series UAE has been found to be safe and effective for the treatment of CSP.