Methotrexate/mifepristone-combined with embryo removal in the treatment of caesarean scar pregnancy

Treatment of Recurrent Cesarean Scar Pregnancy With Oral Mifepristone, Systemic Methotrexate, and Ultrasound-Guided Suction Dilation and Curettage

Cesarean scar pregnancy (CSP), or pregnancies with implantation in a prior cesarean section scar, are rare but may be becoming more common with an increase in cesarean section deliveries. History of prior CSP may also increase the risk for recurrent CSP. Several treatment options and combinations of treatment options for CSP have been described in the literature. Although the optimal treatment is unclear, the Society of Maternal-Fetal Medicine published recommendation guidelines, which include recommendations for the treatment/termination of CSP pregnancies. Treatment of CSP is recommended with operative resection, ultrasound-guided suction dilation and curettage (D&C), or intragestational methotrexate with or without treatment modalities. This is a case report of a patient with recurrent CSP. Her first CSP was incorrectly diagnosed as an incomplete abortion after unsuccessful treatment with misoprostol alone and ultimately was successfully treated with systemic methotrexate. Her second CSP is the basis of this case report and was successfully treated with oral mifepristone and systemic methotrexate (50 milligrams/meter²) before an ultrasound-guided suction D&C at 10 weeks 1 day gestational age. The combination of mifepristone, systemic methotrexate, and suction D&C under ultrasound guidance as a treatment for recurrent CSP has not previously been described in published literature.